Transport in open spin chains: A Monte Carlo wave-function approach
Autor(en): | Michel, Mathias Hess, Ortwin Wichterich, Hannu Gemmer, Jochen |
Stichwörter: | FOURIERS LAW; HEAT-TRANSPORT; LIOUVILLE SPACE; MASTER-EQUATIONS; Materials Science; Materials Science, Multidisciplinary; Physics; Physics, Applied; Physics, Condensed Matter; SMALL QUANTUM-SYSTEMS; THERMAL-CONDUCTIVITY | Erscheinungsdatum: | 2008 | Herausgeber: | AMER PHYSICAL SOC | Enthalten in: | PHYSICAL REVIEW B | Band: | 77 | Ausgabe: | 10 | Zusammenfassung: | 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. |
ISSN: | 24699950 | DOI: | 10.1103/PhysRevB.77.104303 |
Zur Langanzeige
Seitenaufrufe
10
Letzte Woche
0
0
Letzter Monat
8
8
geprüft am 05.06.2024