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Spin Transport Properties of the One-Dimensional Heisenberg Chain: Bethe-Ansatz Solution with Twist Boundary Conditions |
| ZHANG Qiu-Lan 1,2;GU Shi-Jian1 |
| 1Department of Physics and ITP, The Chinese University of Hong Kong, Hong Kong 2Zhejiang Institute of Modern Physics, Zhejiang University, Hangzhou 310027 |
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| Cite this article: |
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ZHANG Qiu-Lan, GU Shi-Jian 2007 Chin. Phys. Lett. 24 1354-1356 |
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Abstract Based on the Bethe-Ansatz solution of the one-dimensional Heisenberg model under twist boundary conditions, we study the spectra of the persistent current carried by the low-lying excited states. It is shown that though the energy spectra of spin-singlet and spin-triplet excitations are degenerate, their persistent current spectra are quite different.
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| Keywords:
75.10.Jm
75.40.-s
05.30.-d
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Received: 11 February 2007
Published: 23 April 2007
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| PACS: |
75.10.Jm
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(Quantized spin models, including quantum spin frustration)
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75.40.-s
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(Critical-point effects, specific heats, short-range order)
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05.30.-d
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(Quantum statistical mechanics)
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