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
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
摘要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.
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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2007, Vol. 24 
