Abstract
The thermodynamics of homogeneous isotropic universes (kg0, \ensuremath{\Lambda}g0) with conformal scalar radiation is analyzed, in analogy with the thermodynamics of black holes in a cavity, as the mutual equilibrium between two subsystems (quantum thermal bosons and semiclassical conformal metric modes) fluctuating under an energy constraint corresponding to the analytic continuation of one of Einstein's equations. The global stability of the cosmological thermal state previously deduced from a statistical computation is confirmed, while the (de Sitter) vacuum state turns out to be locally unstable to creation and heating of matter, and can decay, by an irreversible quasistatic process of energy extraction from gravity, to the equilibrium state compatible with an inflationary cosmology.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
