Evolution of the quantized field coupled to a thermal bath: a phase space approach

E. P. Mattos; A. Vidiella-Barranco

doi:10.1016/j.aop.2020.168321

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arXiv · 2010.09944

Evolution of the quantized field coupled to a thermal bath: a phase space approach

E. P. Mattos·A. Vidiella-Barranco

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Abstract

We present an alternative method for describing the evolution of a mode of the quantized electromagnetic field in contact with a finite temperature thermal bath. We use the expansion of the field density operator in terms of coherent states and the related Glauber-Sudarshan $P$-function in phase space. The method allows us to obtain analytical expressions of the system's time-evolved $P$-function without needing to solve the corresponding master equation.

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E. P. Mattos, A. Vidiella-Barranco. 2020-10-20. Evolution of the quantized field coupled to a thermal bath: a phase space approach. https://doi.org/10.1016/j.aop.2020.168321

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