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Some exact results for one-dimensional two-band SU(2) bosons

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Abstract.

A one-dimensional model for two-band SU(2) bosons with isospin exchange interaction is solved by means of the nested Bethe-ansatz method. The features of the ground state and low-lying excitation state are discussed explicitly by numerical and analytical method. The thermodynamics of the system is analyzed by means of the thermodynamic Bethe-ansatz method, and some physical quantities, such as magnetization, specific heat, etc. are obtained explicitly in some special cases.

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Authors and Affiliations

  1. Zhejiang University, 310027, Hangzhou, P.R. China

    Q.-L. Zhang, S.-J. Gu & Y.-Q. Li

Authors
  1. Q.-L. Zhang
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  2. S.-J. Gu
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  3. Y.-Q. Li
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Corresponding author

Correspondence to Q.-L. Zhang.

Additional information

Received: 14 March 2004, Published online: 12 August 2004

PACS:

03.65.-w Quantum mechanics - 72.15.Nj Collective modes (e.g., in one-dimensional conductors) - 03.65.Ge Solutions of wave equations: bound states

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Zhang, QL., Gu, SJ. & Li, YQ. Some exact results for one-dimensional two-band SU(2) bosons. Eur. Phys. J. B 40, 191–200 (2004). https://doi.org/10.1140/epjb/e2004-00257-y

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  • DOI: https://doi.org/10.1140/epjb/e2004-00257-y

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