The Experts below are selected from a list of 25950 Experts worldwide ranked by ideXlab platform
Jad C Halimeh - One of the best experts on this subject based on the ideXlab platform.
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out of equilibrium phase diagram of long range superconductors
Physical Review B, 2020Co-Authors: Philipp Uhrich, Nicolo Defenu, R Jafari, Jad C HalimehAbstract:Within the ultimate goal of classifying universality in quantum many-body dynamics, understanding the relation between out-of-equilibrium and equilibrium criticality is a crucial objective. Models with power-law interactions exhibit rich well-understood critical behavior in equilibrium, but the out-of-equilibrium picture has remained incomplete, despite recent experimental progress. We construct the rich dynamical phase diagram of free-fermionic chains with power-law hopping and pairing, and provide analytic and numerical evidence showing a direct connection between nonanalyticities of the return rate and zero crossings of the string order parameter. Our results may explain the experimental observation of so-called \textit{accidental} dynamical vortices, which appear for quenches within the same topological phase of the Haldane model, as reported in [Flaschner \textit{et al.}, Nature Physics \textbf{14}, 265 (2018)]. Our work is readily applicable to modern ultracold-atom experiments, not least because state-of-the-art quantum gas microscopes can now Reliably Measure the string order parameter, which, as we show, can serve as an indicator of dynamical criticality.
Wolfgang A Wall - One of the best experts on this subject based on the ideXlab platform.
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automatic mapping of atrial fiber orientations for patient specific modeling of cardiac electromechanics using image registration
International Journal for Numerical Methods in Biomedical Engineering, 2019Co-Authors: Julia M Hoermann, Martin R Pfaller, Linda Avena, Cristobal Bertoglio, Wolfgang A WallAbstract:Knowledge of appropriate local fiber architecture is necessary to simulate patient-specific electromechanics in the human heart. However, it is not yet possible to Reliably Measure in vivo fiber directions especially in human atria. Thus, we present a method that defines the fiber architecture in arbitrarily shaped atria using image registration and reorientation methods based on atlas atria with fibers predefined from detailed histological observations. Thereby, it is possible to generate detailed fiber families in every new patient-specific geometry in an automated, time-efficient process. We demonstrate the good performance of the image registration and fiber definition on 10 differently shaped human atria. Additionally, we show that characteristics of the electrophysiological activation pattern that appear in the atlas atria also appear in the patients' atria. We arrive to analogous conclusions for coupled electro-mechano-hemodynamical computations.
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automatic mapping of atrial fiber orientations for patient specific modeling of cardiac electromechanics using image registration
arXiv: Medical Physics, 2018Co-Authors: Julia M Hoermann, Martin R Pfaller, Linda Avena, Cristobal Bertoglio, Wolfgang A WallAbstract:Knowledge of appropriate local fiber architecture is necessary to simulate patient-specific electromechanics in the human heart. However, it is not yet possible to Reliably Measure in-vivo fiber directions, especially in human atria. Thus, we present a method which defines the fiber architecture in arbitrarily shaped atria using image registration and reorientation methods based on atlas atria with fibers predefined from detailed histological observations. Thereby, it is possible to generate detailed fiber families in every new patient-specific geometry in an automated, time-efficient process. We demonstrate the good performance of the image registration and fiber definition on ten differently shaped human atria. Additionally, we show that characteristics of the electrophysiological activation pattern which appear in the atlas atria also appear in the patients' atria. We arrive at analogous conclusions for coupled electro-mechano-hemodynamical computations.
Cristobal Bertoglio - One of the best experts on this subject based on the ideXlab platform.
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automatic mapping of atrial fiber orientations for patient specific modeling of cardiac electromechanics using image registration
International Journal for Numerical Methods in Biomedical Engineering, 2019Co-Authors: Julia M Hoermann, Martin R Pfaller, Linda Avena, Cristobal Bertoglio, Wolfgang A WallAbstract:Knowledge of appropriate local fiber architecture is necessary to simulate patient-specific electromechanics in the human heart. However, it is not yet possible to Reliably Measure in vivo fiber directions especially in human atria. Thus, we present a method that defines the fiber architecture in arbitrarily shaped atria using image registration and reorientation methods based on atlas atria with fibers predefined from detailed histological observations. Thereby, it is possible to generate detailed fiber families in every new patient-specific geometry in an automated, time-efficient process. We demonstrate the good performance of the image registration and fiber definition on 10 differently shaped human atria. Additionally, we show that characteristics of the electrophysiological activation pattern that appear in the atlas atria also appear in the patients' atria. We arrive to analogous conclusions for coupled electro-mechano-hemodynamical computations.
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automatic mapping of atrial fiber orientations for patient specific modeling of cardiac electromechanics using image registration
arXiv: Medical Physics, 2018Co-Authors: Julia M Hoermann, Martin R Pfaller, Linda Avena, Cristobal Bertoglio, Wolfgang A WallAbstract:Knowledge of appropriate local fiber architecture is necessary to simulate patient-specific electromechanics in the human heart. However, it is not yet possible to Reliably Measure in-vivo fiber directions, especially in human atria. Thus, we present a method which defines the fiber architecture in arbitrarily shaped atria using image registration and reorientation methods based on atlas atria with fibers predefined from detailed histological observations. Thereby, it is possible to generate detailed fiber families in every new patient-specific geometry in an automated, time-efficient process. We demonstrate the good performance of the image registration and fiber definition on ten differently shaped human atria. Additionally, we show that characteristics of the electrophysiological activation pattern which appear in the atlas atria also appear in the patients' atria. We arrive at analogous conclusions for coupled electro-mechano-hemodynamical computations.
Hadi El Daou - One of the best experts on this subject based on the ideXlab platform.
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a validated automated 3 dimensional method to Reliably Measure tibial torsion
American Journal of Sports Medicine, 2021Co-Authors: Joanna M Stephen, Ra Teitge, Andy Williams, James D F Calder, Hadi El DaouAbstract:Background:Tibial torsion is a twist in the tibia Measured as an angle between a proximal axis line and a distal axis line. Abnormal torsion has been associated with a variety of painful clinical s...
Philipp Uhrich - One of the best experts on this subject based on the ideXlab platform.
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out of equilibrium phase diagram of long range superconductors
Physical Review B, 2020Co-Authors: Philipp Uhrich, Nicolo Defenu, R Jafari, Jad C HalimehAbstract:Within the ultimate goal of classifying universality in quantum many-body dynamics, understanding the relation between out-of-equilibrium and equilibrium criticality is a crucial objective. Models with power-law interactions exhibit rich well-understood critical behavior in equilibrium, but the out-of-equilibrium picture has remained incomplete, despite recent experimental progress. We construct the rich dynamical phase diagram of free-fermionic chains with power-law hopping and pairing, and provide analytic and numerical evidence showing a direct connection between nonanalyticities of the return rate and zero crossings of the string order parameter. Our results may explain the experimental observation of so-called \textit{accidental} dynamical vortices, which appear for quenches within the same topological phase of the Haldane model, as reported in [Flaschner \textit{et al.}, Nature Physics \textbf{14}, 265 (2018)]. Our work is readily applicable to modern ultracold-atom experiments, not least because state-of-the-art quantum gas microscopes can now Reliably Measure the string order parameter, which, as we show, can serve as an indicator of dynamical criticality.