Quantum dissipative processes and gravitational entropy of the universe

Details Quantum dissipative processes and gravitational entropy of the universe Quantum dissipative processes and gravitational entropy of the universe

Sep 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983phla...97..368h&link_type=abstract

Physics Letters A, Volume 97, Issue 9, p. 368-374.

Physics

44

Scientific paper

We discuss the meaning of gravitational entropy of the universe when quantum dissipative processes like cosmological particle production are important and propose to use the entropy generated in these processes as a measure of the change in gravitational entropy of the spacetime dynamics. Penrose's Weyl Curvature Hypothesis is re-examined in this generalized context. It is shown that gravitational entropy defined as such can actually decrease in the quantum regime by the action of vacuum viscosity. The theoretical and cosmological implications of this postulate is discussed.

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