Ponencia
Excited state quantum phase transitions and chaos in the Dicke model
Autor/es | Pérez Fernández, Pedro
Relaño, Armando Cejnar, Pavel Arias Carrasco, José Miguel Dukelsky, Jorge García Ramos, José Enrique |
Departamento | Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear Universidad de Sevilla. Departamento de Física Aplicada III |
Fecha de publicación | 2012 |
Fecha de depósito | 2019-03-21 |
Publicado en |
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ISBN/ISSN | 978-073541100-5 0094-243X 1551-7616 |
Resumen | In this contribution, the critical behavior of excited state quantum phase transitions (ESQPT's) and its relation to order and chaos in the Dicke model are studied. This model is nonintegrable. For comparison, the same ... In this contribution, the critical behavior of excited state quantum phase transitions (ESQPT's) and its relation to order and chaos in the Dicke model are studied. This model is nonintegrable. For comparison, the same problem is studied for the Jaynes-Cummings model which is, somehow, the integrable version of the Dicke model. The existence of an ESQPT is confirmed in both cases. However, in the Dicke model the signatures of criticality in excited states are blurred by the onset of quantum chaos. It is concluded that the order-to-chaos transition just below the critical energy gives us a chance to study the impact of chaotic dynamics on the signatures of ESQPTs. |
Identificador del proyecto | FIS2011-28738-c02-01
FIS2009-07277 CSD2007-00042 MSM 0021620859 FQM-160 P07-FQM-02894 |
Cita | Pérez Fernández, P., Relaño, A., Cejnar, P., Arias Carrasco, J.M., Dukelsky, J. y García Ramos, J.E. (2012). Excited state quantum phase transitions and chaos in the Dicke model. En Beauty in Physics: Theory and Experiment - In Honor of Francesco Iachello on the Occasion of His 70th Birthday (318-323), Hacienda Cocoyoc; Mexico: American Institute of Physics. |
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