Dissipative behavior of a quantum system interacting with a macroscopic medium

Raffaella Blasi, Hiromichi Nakazato, Mikio Namiki, Saverio Pascazio

    Research output: Contribution to journalArticle

    3 Citations (Scopus)

    Abstract

    The modified Coleman-Hepp (AgBr) model describes the interaction between an ultrarelativistic quantum mechanical particle Q and an JV-spin array D (a macroscopic medium in the N → ∞ limit). We prove that the energy operator for D essentially behaves as a Wiener process in the weak-coupling, macroscopic limit, in a restricted state space. No assumptions are made on the spectrum of the Hamiltonian of the macroscopic system D. The mechanism of appearance of such a stochastic process and its relevance to issues like dissipation and irreversibility are briefly discussed.

    Original languageEnglish
    Pages (from-to)320-326
    Number of pages7
    JournalPhysics Letters, Section A: General, Atomic and Solid State Physics
    Volume223
    Issue number5
    DOIs
    Publication statusPublished - 1996 Dec 16

      Fingerprint

    ASJC Scopus subject areas

    • Physics and Astronomy(all)

    Cite this