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24 April 2024

» arxiv » quant-ph/0410183

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Berry phase in open quantum systems: a quantum Langevin equation approach
Gabriele De Chiara ; Artur Lozinski ; G. Massimo Palma ;
Date:	22 Oct 2004
Subject:	Quantum Physics; Mesoscopic Systems and Quantum Hall Effect \| quant-ph cond-mat.mes-hall
Abstract:	The evolution of a two level system with a slowly varying Hamiltonian, modeled as s spin 1/2 in a slowly varying magnetic field, and interacting with a quantum environment, modeled as a bath of harmonic oscillators is analyzed using a quantum Langevin approach. This allows to easily obtain the dissipation time and the correction to the Berry phase in the case of an adiabatic cyclic evolution.
Source:	arXiv, quant-ph/0410183
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