�ݺ�ߣshows by User: JorgeQuintanilla

�ݺ�ߣshows by User: JorgeQuintanilla / http://www.slideshare.net/images/logo.gif �ݺ�ߣshows by User: JorgeQuintanilla / Thu, 01 Jul 2021 15:39:54 GMT �ݺ�ߣShare feed for �ݺ�ߣshows by User: JorgeQuintanilla Principal Component Analysis of Quantum Materials Data: a Study in Augmented Intelligence /slideshow/principal-component-analysis-of-quantum-materials-data-a-study-in-augmented-intelligence/249565837 talkmachinelearningforneutronsandmuonsv02-210701153955
Sessions: SCES / Quantum Magnets / Superconductivity Authors: D S Barker (1,5), S R Giblin (2), A D Hillier (3), E E McCabe (1,4), G Möller (1), James Molony (1), J Quintanilla (1), S Ramos (1), T Tula (1), Robert Twyman (1,6) (1) University of Kent (2) University of Cardiff (3) ISIS Facility (4) University of Durham (6) UCL Abstract: There is much interest currently in the potential of machine learning to tease useful information out of complex data on materials. Here we ask whether this can work when only experimentally accessible data, i.e. averages rather than microstates, are available. We use Principal Component Analysis to study simulated neutron-scattering data on cluster quantum magnets [1] and experimental muon-spin relaxation curves from various superconducting and magnetic materials [2]. While the algorithms can perform certain functions, such as detection of phase transitions, automatically, I will argue that their best use is in providing human scientists with new ways to look at the data - an approach that can be best characterised as "augmented", rather than "artificial", intelligence. References: [1] R. Twyman, S. J. Gibson, J. Molony, J. Quintanilla, "Principal Component Analysis of Diffuse Magnetic Scattering: a Theoretical Study", Special Issue on Machine Learning in Condensed Matter Physics, J. Phys.: Condens. Matt. (accepted). arXiv: 2011.08234. [2] T. Tula, G. Möller, J. Quintanilla, S. R. Giblin, A. D. Hillier, E. E. McCabe, S. Ramos, D. S. Barker, S. Gibson, "Machine Learning approach to muon spectroscopy analysis", Special Issue on Machine Learning in Condensed Matter Physics, J. Phys.: Condens. Matt. 33, 194002 (2021). DOI: 10.1088/1361-648X/abe39e.]]>
Sessions: SCES / Quantum Magnets / Superconductivity Authors: D S Barker (1,5), S R Giblin (2), A D Hillier (3), E E McCabe (1,4), G Möller (1), James Molony (1), J Quintanilla (1), S Ramos (1), T Tula (1), Robert Twyman (1,6) (1) University of Kent (2) University of Cardiff (3) ISIS Facility (4) University of Durham (6) UCL Abstract: There is much interest currently in the potential of machine learning to tease useful information out of complex data on materials. Here we ask whether this can work when only experimentally accessible data, i.e. averages rather than microstates, are available. We use Principal Component Analysis to study simulated neutron-scattering data on cluster quantum magnets [1] and experimental muon-spin relaxation curves from various superconducting and magnetic materials [2]. While the algorithms can perform certain functions, such as detection of phase transitions, automatically, I will argue that their best use is in providing human scientists with new ways to look at the data - an approach that can be best characterised as "augmented", rather than "artificial", intelligence. References: [1] R. Twyman, S. J. Gibson, J. Molony, J. Quintanilla, "Principal Component Analysis of Diffuse Magnetic Scattering: a Theoretical Study", Special Issue on Machine Learning in Condensed Matter Physics, J. Phys.: Condens. Matt. (accepted). arXiv: 2011.08234. [2] T. Tula, G. Möller, J. Quintanilla, S. R. Giblin, A. D. Hillier, E. E. McCabe, S. Ramos, D. S. Barker, S. Gibson, "Machine Learning approach to muon spectroscopy analysis", Special Issue on Machine Learning in Condensed Matter Physics, J. Phys.: Condens. Matt. 33, 194002 (2021). DOI: 10.1088/1361-648X/abe39e.]]> Thu, 01 Jul 2021 15:39:54 GMT /slideshow/principal-component-analysis-of-quantum-materials-data-a-study-in-augmented-intelligence/249565837 JorgeQuintanilla@slideshare.net(JorgeQuintanilla) Principal Component Analysis of Quantum Materials Data: a Study in Augmented Intelligence JorgeQuintanilla Sessions: SCES / Quantum Magnets / Superconductivity Authors: D S Barker (1,5), S R Giblin (2), A D Hillier (3), E E McCabe (1,4), G Möller (1), James Molony (1), J Quintanilla (1), S Ramos (1), T Tula (1), Robert Twyman (1,6) (1) University of Kent (2) University of Cardiff (3) ISIS Facility (4) University of Durham (6) UCL Abstract: There is much interest currently in the potential of machine learning to tease useful information out of complex data on materials. Here we ask whether this can work when only experimentally accessible data, i.e. averages rather than microstates, are available. We use Principal Component Analysis to study simulated neutron-scattering data on cluster quantum magnets [1] and experimental muon-spin relaxation curves from various superconducting and magnetic materials [2]. While the algorithms can perform certain functions, such as detection of phase transitions, automatically, I will argue that their best use is in providing human scientists with new ways to look at the data - an approach that can be best characterised as "augmented", rather than "artificial", intelligence. References: [1] R. Twyman, S. J. Gibson, J. Molony, J. Quintanilla, "Principal Component Analysis of Diffuse Magnetic Scattering: a Theoretical Study", Special Issue on Machine Learning in Condensed Matter Physics, J. Phys.: Condens. Matt. (accepted). arXiv: 2011.08234. [2] T. Tula, G. Möller, J. Quintanilla, S. R. Giblin, A. D. Hillier, E. E. McCabe, S. Ramos, D. S. Barker, S. Gibson, "Machine Learning approach to muon spectroscopy analysis", Special Issue on Machine Learning in Condensed Matter Physics, J. Phys.: Condens. Matt. 33, 194002 (2021). DOI: 10.1088/1361-648X/abe39e. <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/talkmachinelearningforneutronsandmuonsv02-210701153955-thumbnail.jpg?width=120&height=120&fit=bounds" /> Sessions: SCES / Quantum Magnets / Superconductivity Authors: D S Barker (1,5), S R Giblin (2), A D Hillier (3), E E McCabe (1,4), G Möller (1), James Molony (1), J Quintanilla (1), S Ramos (1), T Tula (1), Robert Twyman (1,6) (1) University of Kent (2) University of Cardiff (3) ISIS Facility (4) University of Durham (6) UCL Abstract: There is much interest currently in the potential of machine learning to tease useful information out of complex data on materials. Here we ask whether this can work when only experimentally accessible data, i.e. averages rather than microstates, are available. We use Principal Component Analysis to study simulated neutron-scattering data on cluster quantum magnets [1] and experimental muon-spin relaxation curves from various superconducting and magnetic materials [2]. While the algorithms can perform certain functions, such as detection of phase transitions, automatically, I will argue that their best use is in providing human scientists with new ways to look at the data - an approach that can be best characterised as "augmented", rather than "artificial", intelligence. References: [1] R. Twyman, S. J. Gibson, J. Molony, J. Quintanilla, "Principal Component Analysis of Diffuse Magnetic Scattering: a Theoretical Study", Special Issue on Machine Learning in Condensed Matter Physics, J. Phys.: Condens. Matt. (accepted). arXiv: 2011.08234. [2] T. Tula, G. Möller, J. Quintanilla, S. R. Giblin, A. D. Hillier, E. E. McCabe, S. Ramos, D. S. Barker, S. Gibson, "Machine Learning approach to muon spectroscopy analysis", Special Issue on Machine Learning in Condensed Matter Physics, J. Phys.: Condens. Matt. 33, 194002 (2021). DOI: 10.1088/1361-648X/abe39e.

Principal Component Analysis of Quantum Materials Data: a Study in Augmented Intelligence from Jorge Quintanilla

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0 Time-reversal symmetry breaking in superconductors through loop Josephson-current orderh /slideshow/timereversal-symmetry-breaking-in-superconductors-through-loop-josephsoncurrent-orderh/95602888 takoxfordljc-v02aexportnohiddenslides-180501145918
Presentation given at the "Oxford Symposium on Quantum Materials 2018". Abstract: Broken time-revesal symmetry has been observed in a number of supercondcutors which do not seem to fit the mould of standard unconventional pairign models. We propose a superconducting instability where loop Josephson-currents form spontaneously within a unit cell at the critical temperature, Tc. Such currents break time-reversal symmetry (TRS) without needing an unconventional pairing mechanism. Using Ginzburg-Landau theory we show how they emerge in a toy model and estimate the size of the resulting magnetization, which is consistent with recent muon-spin relaxation experiments. We discuss the crystal symmetry requirements, which are quite non-trivial, = and show that they are met by the Re6X (X=Zr, Hf, Ti) family of TRS-breaking, but otherwise seemingly conventional, superconductors. ]]>
Presentation given at the "Oxford Symposium on Quantum Materials 2018". Abstract: Broken time-revesal symmetry has been observed in a number of supercondcutors which do not seem to fit the mould of standard unconventional pairign models. We propose a superconducting instability where loop Josephson-currents form spontaneously within a unit cell at the critical temperature, Tc. Such currents break time-reversal symmetry (TRS) without needing an unconventional pairing mechanism. Using Ginzburg-Landau theory we show how they emerge in a toy model and estimate the size of the resulting magnetization, which is consistent with recent muon-spin relaxation experiments. We discuss the crystal symmetry requirements, which are quite non-trivial, = and show that they are met by the Re6X (X=Zr, Hf, Ti) family of TRS-breaking, but otherwise seemingly conventional, superconductors. ]]> Tue, 01 May 2018 14:59:18 GMT /slideshow/timereversal-symmetry-breaking-in-superconductors-through-loop-josephsoncurrent-orderh/95602888 JorgeQuintanilla@slideshare.net(JorgeQuintanilla) Time-reversal symmetry breaking in superconductors through loop Josephson-current orderh JorgeQuintanilla Presentation given at the "Oxford Symposium on Quantum Materials 2018". Abstract: Broken time-revesal symmetry has been observed in a number of supercondcutors which do not seem to fit the mould of standard unconventional pairign models. We propose a superconducting instability where loop Josephson-currents form spontaneously within a unit cell at the critical temperature, Tc. Such currents break time-reversal symmetry (TRS) without needing an unconventional pairing mechanism. Using Ginzburg-Landau theory we show how they emerge in a toy model and estimate the size of the resulting magnetization, which is consistent with recent muon-spin relaxation experiments. We discuss the crystal symmetry requirements, which are quite non-trivial, = and show that they are met by the Re6X (X=Zr, Hf, Ti) family of TRS-breaking, but otherwise seemingly conventional, superconductors. <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/takoxfordljc-v02aexportnohiddenslides-180501145918-thumbnail.jpg?width=120&height=120&fit=bounds" /> Presentation given at the "Oxford Symposium on Quantum Materials 2018". Abstract: Broken time-revesal symmetry has been observed in a number of supercondcutors which do not seem to fit the mould of standard unconventional pairign models. We propose a superconducting instability where loop Josephson-currents form spontaneously within a unit cell at the critical temperature, Tc. Such currents break time-reversal symmetry (TRS) without needing an unconventional pairing mechanism. Using Ginzburg-Landau theory we show how they emerge in a toy model and estimate the size of the resulting magnetization, which is consistent with recent muon-spin relaxation experiments. We discuss the crystal symmetry requirements, which are quite non-trivial, = and show that they are met by the Re6X (X=Zr, Hf, Ti) family of TRS-breaking, but otherwise seemingly conventional, superconductors.

Time-reversal symmetry breaking in superconductors through loop Josephson-current orderh from Jorge Quintanilla

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0 Experimental implications of the entanglement transition in clustered quantum materials / Jorge Quintanilla /slideshow/experimental-implications-of-the-entanglement-transition-in-clustered-quantum-materials-jorge-quintanilla/76000846 talkbristolentanglementinclusteredmaterialsv01forweb-expanded-170515220209
Contributed talk at Frontiers in Condensed Matter, Bristol, 9-10 January 2017.]]>
Contributed talk at Frontiers in Condensed Matter, Bristol, 9-10 January 2017.]]> Mon, 15 May 2017 22:02:09 GMT /slideshow/experimental-implications-of-the-entanglement-transition-in-clustered-quantum-materials-jorge-quintanilla/76000846 JorgeQuintanilla@slideshare.net(JorgeQuintanilla) Experimental implications of the entanglement transition in clustered quantum materials / Jorge Quintanilla JorgeQuintanilla Contributed talk at Frontiers in Condensed Matter, Bristol, 9-10 January 2017. <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/talkbristolentanglementinclusteredmaterialsv01forweb-expanded-170515220209-thumbnail.jpg?width=120&height=120&fit=bounds" /> Contributed talk at Frontiers in Condensed Matter, Bristol, 9-10 January 2017.

Experimental implications of the entanglement transition in clustered quantum materials / Jorge Quintanilla from Jorge Quintanilla

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0 New Broken Time-reversal Symmetry Superconductors: Theoretical Constraints on Pairing States and Mechanisms /slideshow/new-broken-timereversal-symmetry-superconductors-theoretical-constraints-on-pairing-states-and-mechanisms-62349526/62349526 talksces2016hangzhouv08exported-expanded-expanded-160524153049
Invited talk at the International Conference on Strongly Correlated Electron Systems, Hangzhou, China, May 2016 (SCES 2016).]]>
Invited talk at the International Conference on Strongly Correlated Electron Systems, Hangzhou, China, May 2016 (SCES 2016).]]> Tue, 24 May 2016 15:30:49 GMT /slideshow/new-broken-timereversal-symmetry-superconductors-theoretical-constraints-on-pairing-states-and-mechanisms-62349526/62349526 JorgeQuintanilla@slideshare.net(JorgeQuintanilla) New Broken Time-reversal Symmetry Superconductors: Theoretical Constraints on Pairing States and Mechanisms JorgeQuintanilla Invited talk at the International Conference on Strongly Correlated Electron Systems, Hangzhou, China, May 2016 (SCES 2016). <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/talksces2016hangzhouv08exported-expanded-expanded-160524153049-thumbnail.jpg?width=120&height=120&fit=bounds" /> Invited talk at the International Conference on Strongly Correlated Electron Systems, Hangzhou, China, May 2016 (SCES 2016).

New Broken Time-reversal Symmetry Superconductors: Theoretical Constraints on Pairing States and Mechanisms from Jorge Quintanilla

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0 Broken Time-Reversal Symmetry and Topological Order in Triplet Superconductors /slideshow/broken-timereversal-symmetry-and-topological-order-in-triplet-superconductors/42237633 talk-2014-11-26a-dresden-tripletsuperconductorsforweb-141201173628-conversion-gate02
Jorge Quintanilla, "Broken Time-Reversal Symmetry and Topological Order in Triplet Superconductors" - Research seminar, Max Planck Institute for the Physics of Complex Systems (Dresden), 27 November 2014 Abstract: The concept of broken symmetry is one of the cornerstones of modern physics, for which superconductors stand out as a major paradigm. In conventional superconductors electrons form isotropic singlet pairs that then condense into a coherent state, similar to that of photons in a laser. We understand this in terms of the breaking of global gauge symmetry, which is the invariance of a system under changes to the overall phase of its wave function. In unconventional superconductors, however, more complex forms of pairing are possible, leading to additional broken symmetries and even to topological forms of order that fall outside the broken-symmetry paradigm. In this talk I will discuss such phenomena, making emphasis on triplet pairing and the spontaneous breaking of time-reversal symmetry in some superconductors. I will pay particular attention to large-facility experiments using muons to detect tiny magnetic fields inside superconducting samples and group-theoretical arguments that enable us to constrain the type of pairing present in the light of such experiments. I will also address the possibility of mixed singlet-triplet pairing without broken time-reversal symmetry in superconductors whose crystal lattices lack a centre of inversion, and predict bulk experimental signatures of topological transitions expected to occur in such systems.]]>
Jorge Quintanilla, "Broken Time-Reversal Symmetry and Topological Order in Triplet Superconductors" - Research seminar, Max Planck Institute for the Physics of Complex Systems (Dresden), 27 November 2014 Abstract: The concept of broken symmetry is one of the cornerstones of modern physics, for which superconductors stand out as a major paradigm. In conventional superconductors electrons form isotropic singlet pairs that then condense into a coherent state, similar to that of photons in a laser. We understand this in terms of the breaking of global gauge symmetry, which is the invariance of a system under changes to the overall phase of its wave function. In unconventional superconductors, however, more complex forms of pairing are possible, leading to additional broken symmetries and even to topological forms of order that fall outside the broken-symmetry paradigm. In this talk I will discuss such phenomena, making emphasis on triplet pairing and the spontaneous breaking of time-reversal symmetry in some superconductors. I will pay particular attention to large-facility experiments using muons to detect tiny magnetic fields inside superconducting samples and group-theoretical arguments that enable us to constrain the type of pairing present in the light of such experiments. I will also address the possibility of mixed singlet-triplet pairing without broken time-reversal symmetry in superconductors whose crystal lattices lack a centre of inversion, and predict bulk experimental signatures of topological transitions expected to occur in such systems.]]> Mon, 01 Dec 2014 17:36:28 GMT /slideshow/broken-timereversal-symmetry-and-topological-order-in-triplet-superconductors/42237633 JorgeQuintanilla@slideshare.net(JorgeQuintanilla) Broken Time-Reversal Symmetry and Topological Order in Triplet Superconductors JorgeQuintanilla Jorge Quintanilla, "Broken Time-Reversal Symmetry and Topological Order in Triplet Superconductors" - Research seminar, Max Planck Institute for the Physics of Complex Systems (Dresden), 27 November 2014 Abstract: The concept of broken symmetry is one of the cornerstones of modern physics, for which superconductors stand out as a major paradigm. In conventional superconductors electrons form isotropic singlet pairs that then condense into a coherent state, similar to that of photons in a laser. We understand this in terms of the breaking of global gauge symmetry, which is the invariance of a system under changes to the overall phase of its wave function. In unconventional superconductors, however, more complex forms of pairing are possible, leading to additional broken symmetries and even to topological forms of order that fall outside the broken-symmetry paradigm. In this talk I will discuss such phenomena, making emphasis on triplet pairing and the spontaneous breaking of time-reversal symmetry in some superconductors. I will pay particular attention to large-facility experiments using muons to detect tiny magnetic fields inside superconducting samples and group-theoretical arguments that enable us to constrain the type of pairing present in the light of such experiments. I will also address the possibility of mixed singlet-triplet pairing without broken time-reversal symmetry in superconductors whose crystal lattices lack a centre of inversion, and predict bulk experimental signatures of topological transitions expected to occur in such systems. <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/talk-2014-11-26a-dresden-tripletsuperconductorsforweb-141201173628-conversion-gate02-thumbnail.jpg?width=120&height=120&fit=bounds" /> Jorge Quintanilla, "Broken Time-Reversal Symmetry and Topological Order in Triplet Superconductors" - Research seminar, Max Planck Institute for the Physics of Complex Systems (Dresden), 27 November 2014 Abstract: The concept of broken symmetry is one of the cornerstones of modern physics, for which superconductors stand out as a major paradigm. In conventional superconductors electrons form isotropic singlet pairs that then condense into a coherent state, similar to that of photons in a laser. We understand this in terms of the breaking of global gauge symmetry, which is the invariance of a system under changes to the overall phase of its wave function. In unconventional superconductors, however, more complex forms of pairing are possible, leading to additional broken symmetries and even to topological forms of order that fall outside the broken-symmetry paradigm. In this talk I will discuss such phenomena, making emphasis on triplet pairing and the spontaneous breaking of time-reversal symmetry in some superconductors. I will pay particular attention to large-facility experiments using muons to detect tiny magnetic fields inside superconducting samples and group-theoretical arguments that enable us to constrain the type of pairing present in the light of such experiments. I will also address the possibility of mixed singlet-triplet pairing without broken time-reversal symmetry in superconductors whose crystal lattices lack a centre of inversion, and predict bulk experimental signatures of topological transitions expected to occur in such systems.

Broken Time-Reversal Symmetry and Topological Order in Triplet Superconductors from Jorge Quintanilla

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0 Thermodynamic signatures of topological transitions in nodal superconductors /slideshow/talk-quintanilla-2013birminghamforweb/28453732 talkquintanilla2013birminghamforweb-131120083928-phpapp02
Research seminar given to the University of Birmingham Theory Group, England, 14 November 2013.]]>
Research seminar given to the University of Birmingham Theory Group, England, 14 November 2013.]]> Wed, 20 Nov 2013 08:39:28 GMT /slideshow/talk-quintanilla-2013birminghamforweb/28453732 JorgeQuintanilla@slideshare.net(JorgeQuintanilla) Thermodynamic signatures of topological transitions in nodal superconductors JorgeQuintanilla Research seminar given to the University of Birmingham Theory Group, England, 14 November 2013. <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/talkquintanilla2013birminghamforweb-131120083928-phpapp02-thumbnail.jpg?width=120&height=120&fit=bounds" /> Research seminar given to the University of Birmingham Theory Group, England, 14 November 2013.

Thermodynamic signatures of topological transitions in nodal superconductors from Jorge Quintanilla

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0 Talk bristol uk-nl_2013_v01_for_web /slideshow/talk-bristol-uknl2013v01forweb/26612585 talkbristoluk-nl2013v01forweb-130927052805-phpapp02
Talk given at the UK-Netherlands meeting on strongly-correlated electrons, Bristol, August 2013.]]>
Talk given at the UK-Netherlands meeting on strongly-correlated electrons, Bristol, August 2013.]]> Fri, 27 Sep 2013 05:28:04 GMT /slideshow/talk-bristol-uknl2013v01forweb/26612585 JorgeQuintanilla@slideshare.net(JorgeQuintanilla) Talk bristol uk-nl_2013_v01_for_web JorgeQuintanilla Talk given at the UK-Netherlands meeting on strongly-correlated electrons, Bristol, August 2013. <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/talkbristoluk-nl2013v01forweb-130927052805-phpapp02-thumbnail.jpg?width=120&height=120&fit=bounds" /> Talk given at the UK-Netherlands meeting on strongly-correlated electrons, Bristol, August 2013.

Talk bristol uk-nl_2013_v01_for_web from Jorge Quintanilla

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0 Talk kent symposium_2013_v01_for_web /slideshow/talk-kent-symposium2013v01forweb/19887500 talkkentsymposium2013v01forweb-130424052749-phpapp02
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]]> Wed, 24 Apr 2013 05:27:48 GMT /slideshow/talk-kent-symposium2013v01forweb/19887500 JorgeQuintanilla@slideshare.net(JorgeQuintanilla) Talk kent symposium_2013_v01_for_web JorgeQuintanilla <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/talkkentsymposium2013v01forweb-130424052749-phpapp02-thumbnail.jpg?width=120&height=120&fit=bounds" />

Talk kent symposium_2013_v01_for_web from Jorge Quintanilla

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0 Talk kent symposium_2013_v01_for_web /slideshow/talk-kent-symposium2013v01forweb-19887495/19887495 talkkentsymposium2013v01forweb-130424052736-phpapp02
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]]> Wed, 24 Apr 2013 05:27:36 GMT /slideshow/talk-kent-symposium2013v01forweb-19887495/19887495 JorgeQuintanilla@slideshare.net(JorgeQuintanilla) Talk kent symposium_2013_v01_for_web JorgeQuintanilla <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/talkkentsymposium2013v01forweb-130424052736-phpapp02-thumbnail.jpg?width=120&height=120&fit=bounds" />

Talk kent symposium_2013_v01_for_web from Jorge Quintanilla

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0 Talk kent symposium_2013_v01_for_web /slideshow/talk-kent-symposium2013v01forweb-19887485/19887485 talkkentsymposium2013v01forweb-130424052714-phpapp02
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]]> Wed, 24 Apr 2013 05:27:14 GMT /slideshow/talk-kent-symposium2013v01forweb-19887485/19887485 JorgeQuintanilla@slideshare.net(JorgeQuintanilla) Talk kent symposium_2013_v01_for_web JorgeQuintanilla <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/talkkentsymposium2013v01forweb-130424052714-phpapp02-thumbnail.jpg?width=120&height=120&fit=bounds" />

Talk kent symposium_2013_v01_for_web from Jorge Quintanilla

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0 Double Occupancy as a Probe of the Mott Transition for Fermions in One-dimensional Optical Lattices /slideshow/optical-lattices-doubleoccupancyquampoxford2011split/9342458 opticallatticesdoubleoccupancyquampoxford2011split-110920092358-phpapp01
Contributed talk at QuAMP 2011, Oxford.]]>
Contributed talk at QuAMP 2011, Oxford.]]> Tue, 20 Sep 2011 09:23:55 GMT /slideshow/optical-lattices-doubleoccupancyquampoxford2011split/9342458 JorgeQuintanilla@slideshare.net(JorgeQuintanilla) Double Occupancy as a Probe of the Mott Transition for Fermions in One-dimensional Optical Lattices JorgeQuintanilla Contributed talk at QuAMP 2011, Oxford. <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/opticallatticesdoubleoccupancyquampoxford2011split-110920092358-phpapp01-thumbnail.jpg?width=120&height=120&fit=bounds" /> Contributed talk at QuAMP 2011, Oxford.

Double Occupancy as a Probe of the Mott Transition for Fermions in One-dimensional Optical Lattices from Jorge Quintanilla

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0 Doulbe Occupancy as a Probe of the Mott Transition for Fermions in One-dimensional Optical Lattices /slideshow/optical-lattices-doubleoccupancynottingham2011forweb/9221442 opticallatticesdoubleoccupancynottingham2011forweb-110912045343-phpapp01
Contributed talk at the Annual MSCES 2011, Cambridge. We study theoretically double occupancy D as a probe of the Mott transition for trapped fermions in one-‐dimensional optical lattices and compare our results to the three-‐dimensional case. The ground state is described using the Bethe Ansatz in a local density approximation and the behavior at finite temperatures is modelled using a high-‐temperature series expansion. In addition, we solve analytically the model in the limit in which the interaction energy is the dominant energy scale. We find that enhanced quantum fluctuations in one dimension lead to increased double occupancy in the ground state, even deep in the Mott insulator region of the phase diagram (see figure). Similarly, thermal fluctuations lead to high double occupancies at high temperatures. Nevertheless, D is found to be a good indicator of the Mott transition just as in three dimensions. Moreover, unlike other global observables, the bulk value of D in the Mott phase coincides, quantitatively, with that of a suitably-‐prepared trapped system. We discuss possible experiments to verify these results and argue that the one-‐dimensional Hubbard model could be used as a benchmark for quantitative quantum analogue simulations. ]]>
Contributed talk at the Annual MSCES 2011, Cambridge. We study theoretically double occupancy D as a probe of the Mott transition for trapped fermions in one-‐dimensional optical lattices and compare our results to the three-‐dimensional case. The ground state is described using the Bethe Ansatz in a local density approximation and the behavior at finite temperatures is modelled using a high-‐temperature series expansion. In addition, we solve analytically the model in the limit in which the interaction energy is the dominant energy scale. We find that enhanced quantum fluctuations in one dimension lead to increased double occupancy in the ground state, even deep in the Mott insulator region of the phase diagram (see figure). Similarly, thermal fluctuations lead to high double occupancies at high temperatures. Nevertheless, D is found to be a good indicator of the Mott transition just as in three dimensions. Moreover, unlike other global observables, the bulk value of D in the Mott phase coincides, quantitatively, with that of a suitably-‐prepared trapped system. We discuss possible experiments to verify these results and argue that the one-‐dimensional Hubbard model could be used as a benchmark for quantitative quantum analogue simulations. ]]> Mon, 12 Sep 2011 04:53:40 GMT /slideshow/optical-lattices-doubleoccupancynottingham2011forweb/9221442 JorgeQuintanilla@slideshare.net(JorgeQuintanilla) Doulbe Occupancy as a Probe of the Mott Transition for Fermions in One-dimensional Optical Lattices JorgeQuintanilla Contributed talk at the Annual MSCES 2011, Cambridge. We study theoretically double occupancy D as a probe of the Mott transition for trapped fermions in one-‐dimensional optical lattices and compare our results to the three-‐dimensional case. The ground state is described using the Bethe Ansatz in a local density approximation and the behavior at finite temperatures is modelled using a high-‐temperature series expansion. In addition, we solve analytically the model in the limit in which the interaction energy is the dominant energy scale. We find that enhanced quantum fluctuations in one dimension lead to increased double occupancy in the ground state, even deep in the Mott insulator region of the phase diagram (see figure). Similarly, thermal fluctuations lead to high double occupancies at high temperatures. Nevertheless, D is found to be a good indicator of the Mott transition just as in three dimensions. Moreover, unlike other global observables, the bulk value of D in the Mott phase coincides, quantitatively, with that of a suitably-‐prepared trapped system. We discuss possible experiments to verify these results and argue that the one-‐dimensional Hubbard model could be used as a benchmark for quantitative quantum analogue simulations. <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/opticallatticesdoubleoccupancynottingham2011forweb-110912045343-phpapp01-thumbnail.jpg?width=120&height=120&fit=bounds" /> Contributed talk at the Annual MSCES 2011, Cambridge. We study theoretically double occupancy D as a probe of the Mott transition for trapped fermions in one-‐dimensional optical lattices and compare our results to the three-‐dimensional case. The ground state is described using the Bethe Ansatz in a local density approximation and the behavior at finite temperatures is modelled using a high-‐temperature series expansion. In addition, we solve analytically the model in the limit in which the interaction energy is the dominant energy scale. We find that enhanced quantum fluctuations in one dimension lead to increased double occupancy in the ground state, even deep in the Mott insulator region of the phase diagram (see figure). Similarly, thermal fluctuations lead to high double occupancies at high temperatures. Nevertheless, D is found to be a good indicator of the Mott transition just as in three dimensions. Moreover, unlike other global observables, the bulk value of D in the Mott phase coincides, quantitatively, with that of a suitably-‐prepared trapped system. We discuss possible experiments to verify these results and argue that the one-‐dimensional Hubbard model could be used as a benchmark for quantitative quantum analogue simulations.

Doulbe Occupancy as a Probe of the Mott Transition for Fermions in One-dimensional Optical Lattices from Jorge Quintanilla

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0 SEPnet Atomic and Condensed Matter research theme, 27 June 2011 /slideshow/sepnet-atomic-and-condensed-matter-research-theme-27-june-2011-8436208/8436208 2011-06-27-sepnetvcacmv1forblog-110627093650-phpapp01
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]]> Mon, 27 Jun 2011 09:36:46 GMT /slideshow/sepnet-atomic-and-condensed-matter-research-theme-27-june-2011-8436208/8436208 JorgeQuintanilla@slideshare.net(JorgeQuintanilla) SEPnet Atomic and Condensed Matter research theme, 27 June 2011 JorgeQuintanilla <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/2011-06-27-sepnetvcacmv1forblog-110627093650-phpapp01-thumbnail.jpg?width=120&height=120&fit=bounds" />

SEPnet Atomic and Condensed Matter research theme, 27 June 2011 from Jorge Quintanilla

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0 SEPnet Atomic and Condensed Matter research theme, 27 June 2011 /slideshow/sepnet-atomic-and-condensed-matter-research-theme-27-june-2011/8436196 2011-06-27-sepnetvcacmv1forblog-110627093538-phpapp01
Presentation giving an overview of the SEPnet Atomic and Condensed Matter research theme at the SEPnet-wide video-conference event held on ]]>
Presentation giving an overview of the SEPnet Atomic and Condensed Matter research theme at the SEPnet-wide video-conference event held on ]]> Mon, 27 Jun 2011 09:35:36 GMT /slideshow/sepnet-atomic-and-condensed-matter-research-theme-27-june-2011/8436196 JorgeQuintanilla@slideshare.net(JorgeQuintanilla) SEPnet Atomic and Condensed Matter research theme, 27 June 2011 JorgeQuintanilla Presentation giving an overview of the SEPnet Atomic and Condensed Matter research theme at the SEPnet-wide video-conference event held on <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/2011-06-27-sepnetvcacmv1forblog-110627093538-phpapp01-thumbnail.jpg?width=120&height=120&fit=bounds" /> Presentation giving an overview of the SEPnet Atomic and Condensed Matter research theme at the SEPnet-wide video-conference event held on

SEPnet Atomic and Condensed Matter research theme, 27 June 2011 from Jorge Quintanilla

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0 Turning data into a puzzle: non-unitary triplet pairing in the non-centrosymmetric superconductor LaNiC2 /slideshow/turning-data-into-a-puzzle-nonunitary-triplet-pairing-in-the-noncentrosymmetric-superconductor-lanic2/7312487 2010-quintanilla-lanic2vtechforweb-110318203753-phpapp02
Colloquium given at Virginia Tech University, 18 March 2011.]]>
Colloquium given at Virginia Tech University, 18 March 2011.]]> Fri, 18 Mar 2011 20:37:48 GMT /slideshow/turning-data-into-a-puzzle-nonunitary-triplet-pairing-in-the-noncentrosymmetric-superconductor-lanic2/7312487 JorgeQuintanilla@slideshare.net(JorgeQuintanilla) Turning data into a puzzle: non-unitary triplet pairing in the non-centrosymmetric superconductor LaNiC2 JorgeQuintanilla Colloquium given at Virginia Tech University, 18 March 2011. <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/2010-quintanilla-lanic2vtechforweb-110318203753-phpapp02-thumbnail.jpg?width=120&height=120&fit=bounds" /> Colloquium given at Virginia Tech University, 18 March 2011.

Turning data into a puzzle: non-unitary triplet pairing in the non-centrosymmetric superconductor LaNiC2 from Jorge Quintanilla

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0 Puzzling pairing in the non-centrosymmetric superconductor LaNiC2 /slideshow/puzzling-pairing-in-the-noncentrosymmetric-superconductor-lanic2-6231755/6231755 2010-quintanilla-cmmp2010-forwebsplit-101218161539-phpapp01
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]]> Sat, 18 Dec 2010 16:15:36 GMT /slideshow/puzzling-pairing-in-the-noncentrosymmetric-superconductor-lanic2-6231755/6231755 JorgeQuintanilla@slideshare.net(JorgeQuintanilla) Puzzling pairing in the non-centrosymmetric superconductor LaNiC2 JorgeQuintanilla <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/2010-quintanilla-cmmp2010-forwebsplit-101218161539-phpapp01-thumbnail.jpg?width=120&height=120&fit=bounds" />

Puzzling pairing in the non-centrosymmetric superconductor LaNiC2 from Jorge Quintanilla

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0 Puzzling pairing in the� non-centrosymmetric superconductor LaNiC2 /slideshow/puzzling-pairing-in-the-noncentrosymmetric-superconductor-lanic2/6231398 2010-quintanilla-cmmp2010-forwebsplit-101218155054-phpapp01
Contributed talk at CMMP 2010 (university of Warwick, December 2010)]]>
Contributed talk at CMMP 2010 (university of Warwick, December 2010)]]> Sat, 18 Dec 2010 15:50:52 GMT /slideshow/puzzling-pairing-in-the-noncentrosymmetric-superconductor-lanic2/6231398 JorgeQuintanilla@slideshare.net(JorgeQuintanilla) Puzzling pairing in the� non-centrosymmetric superconductor LaNiC2 JorgeQuintanilla Contributed talk at CMMP 2010 (university of Warwick, December 2010) <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/2010-quintanilla-cmmp2010-forwebsplit-101218155054-phpapp01-thumbnail.jpg?width=120&height=120&fit=bounds" /> Contributed talk at CMMP 2010 (university of Warwick, December 2010)

Puzzling pairing in the non-centrosymmetric superconductor LaNiC2 from Jorge Quintanilla

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0 Puzzling pairing in the�non-centrosymmetric superconductor LaNiC2 /slideshow/puzzling-pairing-in-thenoncentrosymmetric-superconductor-lanic2/6217476 2010-quintanilla-cmmp2010-forwebsplit-101217162945-phpapp01
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]]> Fri, 17 Dec 2010 16:29:37 GMT /slideshow/puzzling-pairing-in-thenoncentrosymmetric-superconductor-lanic2/6217476 JorgeQuintanilla@slideshare.net(JorgeQuintanilla) Puzzling pairing in the�non-centrosymmetric superconductor LaNiC2 JorgeQuintanilla <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/2010-quintanilla-cmmp2010-forwebsplit-101217162945-phpapp01-thumbnail.jpg?width=120&height=120&fit=bounds" />

Puzzling pairing in the non-centrosymmetric superconductor LaNiC2 from Jorge Quintanilla

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0 New Vistas on Quantum Matter Opened by Dipolar Fermions /slideshow/new-vistas-on-quantum-matter-opened-by-dipolar-fermions/5276778 2010-quintanilla-standrews-100924080602-phpapp02
Invited talk at the annual meeting of the UK Condensed Matter - Cold Atoms interface research network, St. Andrews, September 2010]]>
Invited talk at the annual meeting of the UK Condensed Matter - Cold Atoms interface research network, St. Andrews, September 2010]]> Fri, 24 Sep 2010 08:05:57 GMT /slideshow/new-vistas-on-quantum-matter-opened-by-dipolar-fermions/5276778 JorgeQuintanilla@slideshare.net(JorgeQuintanilla) New Vistas on Quantum Matter Opened by Dipolar Fermions JorgeQuintanilla Invited talk at the annual meeting of the UK Condensed Matter - Cold Atoms interface research network, St. Andrews, September 2010 <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/2010-quintanilla-standrews-100924080602-phpapp02-thumbnail.jpg?width=120&height=120&fit=bounds" /> Invited talk at the annual meeting of the UK Condensed Matter - Cold Atoms interface research network, St. Andrews, September 2010

New Vistas on Quantum Matter Opened by Dipolar Fermions from Jorge Quintanilla

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0 2010 Quintanilla Loughborough /slideshow/2010-quintanilla-loughborough/4778546 2010-quintanilla-loughborough-100717144827-phpapp01
�ݺ�ߣs from a research seminar on the non-centrosymmetric superconductor LaNiC2 given at Loughboroguh University (UK) on 26 May 2010.]]>
�ݺ�ߣs from a research seminar on the non-centrosymmetric superconductor LaNiC2 given at Loughboroguh University (UK) on 26 May 2010.]]> Sat, 17 Jul 2010 14:48:25 GMT /slideshow/2010-quintanilla-loughborough/4778546 JorgeQuintanilla@slideshare.net(JorgeQuintanilla) 2010 Quintanilla Loughborough JorgeQuintanilla �ݺ�ߣs from a research seminar on the non-centrosymmetric superconductor LaNiC2 given at Loughboroguh University (UK) on 26 May 2010. <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/2010-quintanilla-loughborough-100717144827-phpapp01-thumbnail.jpg?width=120&height=120&fit=bounds" /> �ݺ�ߣs from a research seminar on the non-centrosymmetric superconductor LaNiC2 given at Loughboroguh University (UK) on 26 May 2010.

2010 Quintanilla Loughborough from Jorge Quintanilla

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0 https://cdn.slidesharecdn.com/profile-photo-JorgeQuintanilla-48x48.jpg?cb=1661797507 Dr. Quintanilla is a theorist working on quantum condensed matter and materials physics. Within this broad area, he has contributed to a number of problems spanning superconductivity, strong correlations, ultracold gases and complex networks. The range of topics is quite broad and often cuts across sub-disciplines. A wide range of techniques are deployed as the need arises: semiclassics, BCS theory, numerical diagonalisation, Bethe ansatz-based techniques, density functional theory, bosonisation, group theory, variational methods, etc. Much of the work is carried out in close collaboration with experimentalists. Current research topics include: * Spontaneous Fermi surface deforma... http://www.cond-mat.org https://cdn.slidesharecdn.com/ss_thumbnails/talkmachinelearningforneutronsandmuonsv02-210701153955-thumbnail.jpg?width=320&height=320&fit=bounds slideshow/principal-component-analysis-of-quantum-materials-data-a-study-in-augmented-intelligence/249565837 Principal Component An... https://cdn.slidesharecdn.com/ss_thumbnails/takoxfordljc-v02aexportnohiddenslides-180501145918-thumbnail.jpg?width=320&height=320&fit=bounds slideshow/timereversal-symmetry-breaking-in-superconductors-through-loop-josephsoncurrent-orderh/95602888 Time-reversal symmetry... https://cdn.slidesharecdn.com/ss_thumbnails/talkbristolentanglementinclusteredmaterialsv01forweb-expanded-170515220209-thumbnail.jpg?width=320&height=320&fit=bounds slideshow/experimental-implications-of-the-entanglement-transition-in-clustered-quantum-materials-jorge-quintanilla/76000846 Experimental implicati...