Comment on "Exploring chaos in the Dicke model using ground-state fidelity and Loschmidt echo".
Phys Rev E Stat Nonlin Soft Matter Phys
; 91(3): 036901, 2015 Mar.
Article
em En
| MEDLINE
| ID: mdl-25871257
In a recent paper [Phys. Rev. E 90, 022920 (2014)] a study of the ground-state fidelity of the Dicke model as a function of the coupling parameter is presented. Abrupt jumps of the fidelity in the superradiant phase are observed and are assumed to be related to the transition to chaos. We show that this conclusion results from a misinterpretation of the numerics. In fact, if the parity symmetry is taken into account, the unexpected jumps disappear.
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01-internacional
Base de dados:
MEDLINE
Idioma:
En
Revista:
Phys Rev E Stat Nonlin Soft Matter Phys
Assunto da revista:
BIOFISICA
/
FISIOLOGIA
Ano de publicação:
2015
Tipo de documento:
Article
País de afiliação:
Argentina
País de publicação:
Estados Unidos