Article
Quantum quench influenced by an excited-state phase transition
Author/s | Pérez Fernández, Pedro
Cejnar, P. Arias Carrasco, José Miguel Dukelsky, Jorge García Ramos, José Enrique Relaño, Armando |
Department | Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear Universidad de Sevilla. Departamento de Física Aplicada III |
Publication Date | 2011 |
Deposit Date | 2017-11-23 |
Published in |
|
Abstract | We analyze excited-state quantum phase transitions (ESQPTs) in three schematic (integrable and nonintegrable) models describing a single-mode bosonic field coupled to a collection of atoms. It is shown that the presence ... We analyze excited-state quantum phase transitions (ESQPTs) in three schematic (integrable and nonintegrable) models describing a single-mode bosonic field coupled to a collection of atoms. It is shown that the presence of the ESQPT in these models affects the quantum relaxation processes following an abrupt quench in the control parameter. Clear-cut evidence of the ESQPT effects is presented in integrable models, while in a nonintegrable model the evidence is blurred due to chaotic behavior of the system in the region around the critical energy. |
Project ID. | 202/09/0084
MSM 0021620859 FIS2009-07277 FIS2008-04189 FIS2006-12783- C03-01 FPA2006-13807-C02-02 FPA2007-63074 FIS2009-11621-C02-01 CSPD-2007-00042-Ingenio FQM160 FQM318 P05-FQM437 P07-FQM-02962 UCM-910059 |
Citation | Pérez Fernández, P., Cejnar, P., Arias Carrasco, J.M., Dukelsky Bercovich, J., García Ramos, J.E. y Relaño, A. (2011). Quantum quench influenced by an excited-state phase transition. Physical Review A, 8, 033802-1-033802-14. |
Files | Size | Format | View | Description |
---|---|---|---|---|
Pérez-Fernández.pdf | 816.2Kb | [PDF] | View/ | |