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Open Quantum Systems Decoherence
Landau-Zener transition of a two-level system driven by spin chains near their critical points
arXiv
Authors: L. C. Wang, X. L. Huang, X. X. Yi
Year
2007
Paper ID
50478
Status
Preprint
Abstract Read
~2 min
Abstract Words
98
Citations
N/A
Abstract
The Landau-Zener(LZ) transition of a two-level system coupling to spin chains near their critical points is studied in this paper. Two kinds of spin chains, the Ising spin chain and XY spin chain, are considered. We calculate and analyze the effects of system-chain coupling on the LZ transition. A relation between the LZ transition and the critical points of the spin chain is established. These results suggest that LZ transitions may serve as the witnesses of criticality of the spin chain. This may provide a new way to study quantum phase transitions as well as LZ transitions.
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- This paper contributes to the Open Quantum Systems & Decoherence research area in the Quantum Articles archive.
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- The Landau-Zener(LZ) transition of a two-level system coupling to spin chains near their critical points is studied in this paper.
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