Quantum thermodynamics of de Sitter space
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| Autors: | , , |
|---|---|
| Format: | artículo original |
| Data de publicació: | 2023 |
| Descripció: | We consider the local physics of an open quantum system embedded in an expanding three-dimensional space x, evolving in cosmological time t, weakly coupled to a massless quantum field. We derive the corresponding Markovian master equation for the system's nonunitary evolution and show that, for a de Sitter space with Hubble parameter h = const., the background fields act as a physical heat bath with temperature T_dS = h/2π. The energy density of this bath obeys the Stefan-Boltzmann law ρ_dS \propto h^4. We comment on how these results clarify the thermodynamics of de Sitter space and support previous arguments for its instability in the infrared. The cosmological implications are considered in an accompanying letter. |
| Pais: | Kérwá |
| Institution: | Universidad de Costa Rica |
| Repositorio: | Kérwá |
| Idioma: | Inglés |
| OAI Identifier: | oai:kerwa.ucr.ac.cr:10669/99934 |
| Accés en línia: | https://hdl.handle.net/10669/99934 https://doi.org/10.1103/PhysRevD.108.123530 |
| Paraula clau: | de Sitter space quantum thermodynamics Gibbons-Hawking temperature inflation cosmological constant |