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Lóbez, C. M. and Relaño Pérez, Armando (2016) Entropy, chaos, and excited-state quantum phase transitions in the Dicke model. Physical review E, 94 (1). 012140_1-012140_10. ISSN 2470-0045
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Official URL: http://dx.doi.org/10.1103/PhysRevE.94.012140
Abstract
We study nonequilibrium processes in an isolated quantum system-the Dicke model-focusing on the role played by the transition from integrability to chaos and the presence of excited-state quantum phase transitions. We show that both diagonal and entanglement entropies are abruptly increased by the onset of chaos. Also, this increase ends in both cases just after the system crosses the critical energy of the excited-state quantum phase transition. The link between entropy production, the development of chaos, and the excited-state quantum phase transition is more clear for the entanglement entropy.
Item Type: | Article |
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Additional Information: | ©2016 American Physical Society. |
Uncontrolled Keywords: | Statistical-mechanics; Systems; Dynamics; Thermalization; Entanglement |
Subjects: | Sciences > Physics > Thermodynamics |
ID Code: | 39772 |
Deposited On: | 28 Oct 2016 14:23 |
Last Modified: | 04 Apr 2022 15:22 |
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