On Gravitational Stefan-Boltzmann Law and Casimir Effect in FRW Universe
arXiv:2105.06968 · doi:10.1007/s10714-021-02826-y
Abstract
Both Stefan-Boltzmann law and the Casimir effect, in a universe described by the FRW metric with zero curvature, are calculated. These effects are described by Thermo Field Dynamics (TFD). The gravitational energy-momentum tensor is defined in the context of Teleparallel Equivalent to General Relativity (TEGR). Each of the two effects gives a consistent prediction with what is observed on a cosmological scale. One of the effect establishes a minimum range for the deceleration parameter. While another leads to the conclusion that a possible cosmological constant has a very small order of magnitude.
12 pages, accepted for publication in General Relativity and Gravitation
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