No Time Asymmetry from Quantum Mechanics

Details No Time Asymmetry from Quantum Mechanics No Time Asymmetry from Quantum Mechanics

1993-04-19

arxiv.org/abs/gr-qc/9304027v2

Phys.Rev.Lett. 70 (1993) 4034-4037

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

14 pages, Alberta-Thy-11-93

Scientific paper

10.1103/PhysRevLett.70.4034

With CPT-invariant initial conditions that commute with CPT-invariant final conditions, the respective probabilities (when defined) of a set of histories and its CPT reverse are equal, giving a CPT-symmetric universe. This leads me to question whether the asymmetry of the Gell-Mann--Hartle decoherence functional for ordinary quantum mechanics should be interpreted as an asymmetry of {\it time} .

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