A completely positive master equation describing quantum dissipation for a Brownian particle is derived starting from microphysical collisions, exploiting a recently introduced approach to subdynamics of a macrosystem. The obtained equation can be cast into Lindblad form with a single generator for each Cartesian direction. Temperature dependent friction and diffusion coefficients for both position and momentum are expressed in terms of the collision cross section.
Completely Positive Quantum Dissipation / B. Vacchini. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 84:7(2000), pp. 1374-1377.
Titolo: | Completely Positive Quantum Dissipation |
Autori: | VACCHINI, BASSANO MARIA (Primo) |
Settore Scientifico Disciplinare: | Settore FIS/02 - Fisica Teorica, Modelli e Metodi Matematici |
Data di pubblicazione: | 2000 |
Rivista: | |
Tipologia: | Article (author) |
Digital Object Identifier (DOI): | http://dx.doi.org/10.1103/PhysRevLett.84.1374 |
Appare nelle tipologie: | 01 - Articolo su periodico |
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