Time Symmetric Quantum Cosmology and Our Universe

Details Time Symmetric Quantum Cosmology and Our Universe Time Symmetric Quantum Cosmology and Our Universe

1993-01-08

arxiv.org/abs/gr-qc/9301005v1

Class.Quant.Grav.10:L79-L84,1993

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

9 pages + 1 Figure, Tex

Scientific paper

10.1088/0264-9381/10/7/001

We investigate the time neutral formulation of quantum cosmology of Gell-Mann and Hartle. In particular we study the proposal discussed by them that our Universe corresponds to the time symmetric decoherence functional with initial and final density matrix of low entropy. We show that our Universe does not correspond to this proposal by investigating the behaviour of small inhomogeneous perturbations around a Friedman-Robertson-Walker model. These perturbations cannot be time symmetric if they were small at the Big Bang.

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