Time and Entropy from Semi-classical Tunneling of the Cosmological Scale Function

Details Time and Entropy from Semi-classical Tunneling of the Cosmological Scale Function Time and Entropy from Semi-classical Tunneling of the Cosmological Scale Function

1995-07-31

arxiv.org/abs/gr-qc/9507058v2

Int.J.Mod.Phys.D5:885-902,1996

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

17 pages;, no figure. latex 2e, To appear in Moscow Quantum Gravity Seminar, June 12-19, 1995, latex correction!

Scientific paper

10.1142/S0218271896000539

Two major apparently unrelated problems, that of the origin of time in the universe associated with quantum gravity and to the entropy in de Sitter cosmological models, are found to have their origin in a single physical phenomenon: the semi-classical tunneling through a classically forbidden region of the cosmological scale function. In this region there is a mixing of the states of quantum matter and those of the semi-classical gravity which produces a thermal mixture of the matter states and hence an "entropy"; this same mixing effect brings about the conversion of a parametric time variable into a physical intrinsic time.

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