TY - JOUR

T1 - Dissipative behavior of a quantum system interacting with a macroscopic medium

AU - Blasi, Raffaella

AU - Nakazato, Hiromichi

AU - Namiki, Mikio

AU - Pascazio, Saverio

PY - 1996/12/16

Y1 - 1996/12/16

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=0040879014&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0040879014&partnerID=8YFLogxK

U2 - 10.1016/S0375-9601(96)00768-2

DO - 10.1016/S0375-9601(96)00768-2

M3 - Article

AN - SCOPUS:0040879014

SN - 0375-9601

VL - 223

SP - 320

EP - 326

JO - Physics Letters, Section A: General, Atomic and Solid State Physics

JF - Physics Letters, Section A: General, Atomic and Solid State Physics

IS - 5

ER -