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Transport in open spin chains: A Monte Carlo wave-function approach

Michel, M, Hess, O, Wichterich, H and Gemmer, J (2008) Transport in open spin chains: A Monte Carlo wave-function approach PHYSICAL REVIEW B, 77 (10). ? - ?. ISSN 1098-0121


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We investigate energy transport in several two-level atom or spin-1/2 models by a direct coupling to heat baths of different temperatures. The analysis is carried out on the basis of a recently derived quantum master equation which describes the nonequilibrium properties of internally weakly coupled systems appropriately. For the computation of the stationary state of the dynamical equations, we employ a Monte Carlo wavefunction approach. The analysis directly indicates normal diffusive or ballistic transport in finite models and hints toward an extrapolation of the transport behavior of infinite models.

Item Type: Article
Uncontrolled Keywords: Science & Technology, Physical Sciences, Physics, Condensed Matter, Physics, SMALL QUANTUM-SYSTEMS, MASTER-EQUATIONS, THERMAL-CONDUCTIVITY, LIOUVILLE SPACE, HEAT-TRANSPORT, FOURIERS LAW
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Divisions: Faculty of Engineering and Physical Sciences > Physics
Depositing User: Mr Adam Field
Date Deposited: 27 May 2010 14:08
Last Modified: 23 Sep 2013 18:27

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