• Passage from a pure state description to the microcanonical ensemble description for closed quantum systems

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    • Keywords


      Ergodicity; microcanonical; quantum

    • Abstract


      We have addressed the foundational issue of how a macroscopic quantum system starting off as a pure state tends towards a mixed state described by the microcanonical ensemble. The earlier works of von Neumann and Van Kampen are also reviewed. A simple criterion is given as to when the above mentioned passage can take place.

    • Author Affiliations


      N D Hari Dass1 B Sathiapalan1 Kalyanarama1

      1. Institute of Mathematical Sciences, C.I.T. Campus, Taramani, Chennai - 600 113, India
    • Dates

  • Pramana – Journal of Physics | News

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      Posted on July 25, 2019

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