Casimir effect and Stefan-Boltzmann law at finite temperature in a Friedmann-Robertson-Walker universe
arXiv:2003.07665 · doi:10.1142/S0218271820500455
Abstract
A spatially flat Friedmann-Robertson-Walker background with a general scale factor is considered. In this space-time, the energy-momentum tensor of the scalar field with a general curvature coupling parameter is obtained. Using the Thermo Field Dynamics (TFD) formalism the Stefan-Boltzmann law and the Casimir effect at finite temperature are calculated. The Casimir effect at zero temperature is also considered. The expansion of the universe changes these effects. A discussion of these modifications is presented.
14 pages, accepted for publication in IJMPD
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