Foundations of Physics

, Volume 9, Issue 11–12, pp 803–818 | Cite as

Quantum theory and time asymmetry

  • H. D. Zeh
Article

Abstract

The relation between quantum measurement and thermodynamically irreversible processes is investigated. The reduction of the state vector is fundamentally asymmetric in time and shows an observer-relatedness which may explain the double interpretation of the state vector as a representation of physical states as well as ofinformation about physical states. The concept of relevance being used in all statistical theories of irreversible thermodynamics is demonstrated to be based on the same observer-relatedness. Quantum theories of irreversible processes implicitly use an objectivized process of state vector reduction. The conditions for the reduction are discussed, and it is concluded that the final (subjective) observer system may be carried by a space point.

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Copyright information

© Plenum Publishing Corporation 1979

Authors and Affiliations

  • H. D. Zeh
    • 1
  1. 1.Institut für Theoretische PhysikUniversität HeidelbergHeidelbergGermany

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