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arXiv · hep-th/9308070

On Coarse-grained Entropy and Stimulated Emission in Curved Space-Time

Esko Keski-Vakkuri
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Abstract

We study the entropy generation and particle production in scalar quantum field theory in expanding spacetimes with many-particle mixed initial states. The recently proposed coarse-grained entropy approach by Brandenberger et. al. is applied to systems which may have a non-zero initial entropy. We find that although the the particle production is amplified as a result of boson statistics, the (coarse-grained) entropy generation is {\em attenuated} when initial particles are present.

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Esko Keski-Vakkuri. 1993-08-16. On Coarse-grained Entropy and Stimulated Emission in Curved Space-Time. https://doi.org/10.1103/physrevd.49.2122

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