Specificity of Phase Transition of Quasi-Spin System in Two-Quantum Exchange with Thermostat

Details Specificity of Phase Transition of Quasi-Spin System in Two-Quantum Exchange with Thermostat Specificity of Phase Transition of Quasi-Spin System in Two-Quantum Exchange with Thermostat

2008-07-07

arxiv.org/abs/0807.1127v1

Physics Letters A 357 (2006), 104-107

Physics

Quantum Physics

Scientific paper

10.1016/j.physleta.2006.04.029

The quantum phase transition of the system of N radiators in case of two-photon exchange interaction with cavity electromagnetic field is considered. It is shown that for this system the atom-field exchange integral increases with the increase of temperature. This effect generates peculiarities in phase transition picture. The process of nonlinear exchange between the quasi-spins leads to the increase of critical temperature as compared to traditional second order phase transition of quasi-spin system.

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