Thermodynamics of the vacuum

Autor:	G. Paál, B. Lukács, Lajos Diósi, K. Martinás
Rok vydání:	1986
Předmět:	Physics General Relativity and Quantum Cosmology Space and Planetary Science General relativity Vacuum state Thermodynamics Astronomy and Astrophysics Back-reaction Quantum field theory Kinetic energy Entropy (arrow of time) Cosmology Vacuum expectation value
Zdroj:	Astrophysics and Space Science. 122:371-386
ISSN:	1572-946X 0004-640X
Popis:	The fact that the energy-momentum tensor has nonzero vacuum expectation value in some space-times (the so-called back reaction) indicates a nontrivial thermodynamics of such vacua. A consequent thermodynamic analysis of the problem in Robertson-Walker space-times shows that, in the generic case, the number of the independent extensives is 2, in spite of the fact that the energy density is completely determined by the time-evolution of the geometry since the preparation of the vacuum state. The appearance of a second independent extensive seems to be in direct connection with the extra entropy term in theGeneralized Second Law of Bekenstein and Hawking.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::bccdbc4ff1f5db888114d6857b41a281 https://doi.org/10.1007/bf00650202 Zobrazit plný text záznamu Full text from SpringerLink