Phys. Rev. Lett. 70, 4034–4037 (1993)No time asymmetry from quantum mechanicsReceived 16 February 1993; published in the issue dated 28 June 1993 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 time. © 1993 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.70.4034
DOI:
10.1103/PhysRevLett.70.4034
PACS:
03.65.-w, 05.70.Ln, 11.30.Er, 98.80.Hw
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