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Non-Markovianity of the Heisenberg XY spin environment with Dzyaloshinskii-Moriya interaction |
| Xiang Jun-Dong (项俊东)a, Qin Li-Guo (秦立国)b, Tian Li-Jun (田立君)a |
a Department of Physics, Shanghai University, Shanghai 200444, China;
b Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China |
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Abstract Using the effective non-Markovian measure proposed by Breuer et al. recently, we study the memory effect of a central qubit system coupled to a spin chain environment with Dzyaloshinskii-Moriya interaction in a transverse field. It is discovered that the central qubit system presents different memory effects in different environment phases with the different oscillatory behaviors of the decoherence factor. Moreover, it is revealed that the Dzyaloshinskii-Moriya interaction has a prominent influence on the memory effect of a central qubit system via modifying the amplitude and period of the decoherence factor under certain conditions.
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Received: 24 February 2014
Revised: 23 April 2014
Accepted manuscript online:
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PACS:
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03.65.Yz
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(Decoherence; open systems; quantum statistical methods)
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05.45.-a
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(Nonlinear dynamics and chaos)
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75.10.Pq
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(Spin chain models)
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| Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 11075101 and 11275119). |
Corresponding Authors:
Tian Li-Jun
E-mail: tianlijun@staff.shu.edu.cn
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Cite this article:
Xiang Jun-Dong (项俊东), Qin Li-Guo (秦立国), Tian Li-Jun (田立君) Non-Markovianity of the Heisenberg XY spin environment with Dzyaloshinskii-Moriya interaction 2014 Chin. Phys. B 23 110305
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