No time asymmetry from quantum mechanics

Journal Article · Mon Jun 28 04:00:00 EDT 1993 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.70.4034· OSTI ID:6380619

Page, D N ^[1]

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1. CIAR Cosmology Program, Theoretical Physics Institute, Department of Physics, University of Alberta, Edmonton, Alberta, T6G 2J1 (Canada)

With [ital CPT]-invariant initial conditions that commute with [ital CPT]-invariant final conditions, the respective probabilities (when defined) of a set of histories and its [ital CPT] reverse are equal, giving a [ital 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 [ital time].

• OSTI ID: 6380619
• Journal Information: Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 70:26; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

662120* -- General Theory of Particles & Fields-- Symmetry
Conservation Laws
Currents & Their Properties-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ASYMMETRY
COSMOLOGY
CPT THEOREM
INVARIANCE PRINCIPLES
MATHEMATICAL OPERATORS
MECHANICS
PROJECTION OPERATORS
QUANTUM MECHANICS
SYMMETRY BREAKING
T INVARIANCE