Release Time:2019-03-09  Hits:

Indexed by: Journal Article

Date of Publication: 2014-04-01

Journal: INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS

Included Journals: Scopus、SCIE

Volume: 53

Issue: 4

Page Number: 1159-1167

ISSN: 0020-7748

Key Words: Non-Markovian; Spin bath; Boson reservoir

Abstract: We theoretically study the entanglement dynamics of two coupled spins in a spin star environment, whose elements are coupled to local bosonic baths. It is shown that the dynamics of the entanglement depends on the initial state of the system and the coupling strength between the two coupled central spins, the interactions between the central system and the environment, as well as interactions between the bath spin and the reservoir. We also investigate the effect of non-Markovian dynamics in contrast with the Markovian case. It is found that the non-Markovian dynamics has a significant effect on the disentanglement between the two central spins.