A Bayesian reanalysis with DESI, Planck, and supernova data shows that the reported preference for thawing quintessence is a prior-volume artifact that disappears under less data-informed priors.
Decay of Vacuum Energy
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abstract
This paper studies interacting massive particles on the de Sitter background. It is found that the vacuum acts as an inversely populated medium which is able to generate stimulated radiation. Without back reaction (not considered in this paper) this effect leads to the explosion. It is expected that the proposed "cosmic laser" mechanism depletes the curvature and may help to solve the cosmological constant problem.
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Do Observations Prefer Thawing Quintessence?
A Bayesian reanalysis with DESI, Planck, and supernova data shows that the reported preference for thawing quintessence is a prior-volume artifact that disappears under less data-informed priors.