Quantum decoherence and classical correlation in quantum mechanics

Journal Article · Mon Oct 15 00:00:00 EDT 1990 · Physical Review, D (Particles Fields); (USA)

DOI:https://doi.org/10.1103/PhysRevD.42.2929· OSTI ID:6225753

Morikawa, M ^[1]

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1. Department of Physics, University of British Columbia, Vancouver, British Columbia (Canada)

We study two conditions for the quantum system to behave classically: decoherence in the quantum interference and the establishment of the classical trajectory in phase space. We show, despite the fact that these two conditions partially conflict with each other, the upside-down harmonic oscillator with a diffusion term satisfies them simultaneously. The implications for quantum cosmology and the measurement theory of quantum mechanics are given.

• OSTI ID: 6225753
• Journal Information: Physical Review, D (Particles Fields); (USA), Vol. 42:8; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
COSMOLOGY
QUANTUM MECHANICS
ENTROPY
HARMONIC OSCILLATOR MODELS
PHASE SPACE
SPACE-TIME
UNIVERSE
WAVE FUNCTIONS
FUNCTIONS
MATHEMATICAL MODELS
MATHEMATICAL SPACE
MECHANICS
PHYSICAL PROPERTIES
SPACE
THERMODYNAMIC PROPERTIES
657002* - Theoretical & Mathematical Physics- Classical & Quantum Mechanics
640106 - Astrophysics & Cosmology- Cosmology