Physics – Quantum Physics
Scientific paper
2005-07-04
Physics
Quantum Physics
Scientific paper
10.1016/j.physleta.2006.01.028
We present the qualitative differences in the phase transitions of the mono-mode Dicke model in its integrable and chaotic versions. We show that a first order phase transition occurs in the integrable case whereas a second order in the chaotic one. This difference is also reflected in the classical limit: for the integrable case the stable fixed point in phase space suffers a bifurcation of Hopf type whereas for the second one a pitchfork type bifurcation has been reported.
Furuya Ken
Nemes Carolina M.
Oliveira Amanda C.
Pellegrino Giancarlo Q.
Reis Mauricio
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