Global and local relaxation of a spin chain under exact Schrodinger and master-equation dynamics
DC Element | Wert | Sprache |
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dc.contributor.author | Henrich, MJ | |
dc.contributor.author | Michel, M | |
dc.contributor.author | Hartmann, M | |
dc.contributor.author | Mahler, G | |
dc.contributor.author | Gemmer, J | |
dc.date.accessioned | 2021-12-23T16:09:39Z | - |
dc.date.available | 2021-12-23T16:09:39Z | - |
dc.date.issued | 2005 | |
dc.identifier.issn | 15393755 | |
dc.identifier.uri | https://osnascholar.ub.uni-osnabrueck.de/handle/unios/8920 | - |
dc.description.abstract | We solve the Schrodinger equation for an interacting spin chain locally coupled to a quantum environment with a specific degeneracy structure. The reduced dynamics of the whole spin chain as well as of single spins is analyzed. We show that the total spin chain relaxes to a thermal equilibrium state independently of the internal interaction strength. In contrast, the asymptotic states of each individual spin are thermal for weak but nonthermal for stronger spin-spin coupling. The transition between both scenarios is found for couplings of the order of 0.1x Delta E, with Delta E denoting the Zeeman splitting. We compare these results with a master-equation treatment; when time averaged, both approaches lead to the same asymptotic state and finally with analytical results. | |
dc.language.iso | en | |
dc.publisher | AMER PHYSICAL SOC | |
dc.relation.ispartof | PHYSICAL REVIEW E | |
dc.subject | ENTROPY | |
dc.subject | LAW | |
dc.subject | Physics | |
dc.subject | Physics, Fluids & Plasmas | |
dc.subject | Physics, Mathematical | |
dc.subject | QUANTUM | |
dc.title | Global and local relaxation of a spin chain under exact Schrodinger and master-equation dynamics | |
dc.type | journal article | |
dc.identifier.doi | 10.1103/PhysRevE.72.026104 | |
dc.identifier.isi | ISI:000231564100018 | |
dc.description.volume | 72 | |
dc.description.issue | 2, 2 | |
dc.contributor.orcid | 0000-0002-8207-3806 | |
dc.contributor.researcherid | E-5807-2010 | |
dc.identifier.eissn | 15502376 | |
dc.publisher.place | ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA | |
dcterms.isPartOf.abbreviation | Phys. Rev. E | |
dcterms.oaStatus | Green Submitted | |
crisitem.author.netid | GeJo743 | - |
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