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arXiv · 2307.05243

Inconsistency with De Sitter Spacetime in a New Approach to Gravitational Particle Production

Mark P. Hertzberg·Abraham Loeb
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Abstract

We study a claimed new mechanism for particle production and black hole evaporation through a spatially dependent temperature. This new temperature is comparable to the Hawking result near the black hole, but is very small far away, and therefore could be a small correction. Here we apply the proposed reasoning to the case of de Sitter space, finding that it over predicts the de Sitter temperature of a minimally coupled scalar by factor of $\approx 4.3$ and over predicts the particle production rate by a factor of $\approx 52$. For non-minimally coupled scalars, it has other various problems; it predicts a negative particle production for conformal, or nearly conformal, coupled scalars; it predicts unsuppressed productions of heavy scalars. This all demonstrates an inconsistency in the proposed formalism.

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BibTeXRIS

Mark P. Hertzberg, Abraham Loeb. 2023-07-09. Inconsistency with De Sitter Spacetime in a New Approach to Gravitational Particle Production. https://doi.org/10.1016/j.dark.2025.102067

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