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- W4384111568 abstract "We consider the local physics of an open quantum system embedded in an expanding three-dimensional space $mathbf{x}$, evolving in cosmological time $t$, weakly coupled to massless quantum fields. We derive the corresponding Markovian master equation for the system's non-unitary evolution and show that, for a de Sitter (dS) space with Hubble parameter $h = $ const., the background fields act as a physical heat bath with temperature $T_{rm dS} = h / 2 pi$. The energy density of this bath obeys the Stefan-Boltzmann law $rho_{rm dS} propto h^4$. We comment on how these results clarify the thermodynamics of dS space and support previous arguments for its instability in the infrarred. The cosmological implications are considered in a accompanying letter" @default.
- W4384111568 created "2023-07-13" @default.
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- W4384111568 date "2023-07-10" @default.
- W4384111568 modified "2023-09-23" @default.
- W4384111568 title "Quantum thermodynamics of de Sitter space" @default.
- W4384111568 doi "https://doi.org/10.48550/arxiv.2307.04800" @default.
- W4384111568 hasPublicationYear "2023" @default.
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