Dissipative behavior of a quantum system interacting with a macroscopic medium

Raffaella Blasi*, Hiromichi Nakazato, Mikio Namiki, Saverio Pascazio

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


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
Issue number5
Publication statusPublished - 1996 Dec 16

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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