Published December 4, 2017 | Version v1
Publication

Excited-state phase transition and onset of chaos in quantum optical models

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Description

We study the critical behavior of excited states and its relation to order and chaos in the Jaynes-Cummings and Dicke models of quantum optics. We show that both models exhibit a chain of excited-state quantum phase transitions demarcating the upper edge of the superradiant phase. For the Dicke model, the signatures of criticality in excited states are blurred by the onset of quantum chaos. We show that the emergence of quantum chaos is caused by the precursors of the excited-state quantum phase transition.

Abstract

Czech Science Foundation 202/09/0084

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Czech Ministry of Education MSM 0021620859

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Ministerio de Ciencia e Innovación FIS2009-07277, FIS2008-04189, FIS2009-11621-C02-01, FPA2007-63074

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Junta de Andalucía FQM160, FQM318, P05-FQM437, P07-FQM-02962

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Centro Nacional de Física de Partículas, Astropartículas y Nuclear CSPD-2007-00042-Ingenio

Additional details

Created:
March 27, 2023
Modified:
November 29, 2023