Spin excitations in the integrable open quantum group invariant supersymmetric t-J model

Y. K. Zhou; M. T. Batchelor

doi:10.1016/S0550-3213(97)00106-5

Spin excitations in the integrable open quantum group invariant supersymmetric t-J model

Y. K. Zhou^*, M. T. Batchelor

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

12 Citations (Scopus)

Abstract

The integrable quantum group spl_q(2, 1)-invariant supersymmetric t-J model with open boundaries is studied via an analytic treatment of the Bethe equations. An su(2) feature is seen to hold for states at or close to half-filling. For these states the eigenvalues of the transfer matrix of the t-J model satisfy a set of su(2) functional relations. The finite-size corrections to the relevant eigenvalues, and thus the surface effect on the spin excitations, have been calculated analytically by solving the functional relations.

Original language	English
Pages (from-to)	576-594
Number of pages	19
Journal	Nuclear Physics B
Volume	490
Issue number	3
DOIs	https://doi.org/10.1016/S0550-3213(97)00106-5
Publication status	Published - 21 Apr 1997
Externally published	Yes

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abstract = "The integrable quantum group splq(2, 1)-invariant supersymmetric t-J model with open boundaries is studied via an analytic treatment of the Bethe equations. An su(2) feature is seen to hold for states at or close to half-filling. For these states the eigenvalues of the transfer matrix of the t-J model satisfy a set of su(2) functional relations. The finite-size corrections to the relevant eigenvalues, and thus the surface effect on the spin excitations, have been calculated analytically by solving the functional relations.",

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AB - The integrable quantum group splq(2, 1)-invariant supersymmetric t-J model with open boundaries is studied via an analytic treatment of the Bethe equations. An su(2) feature is seen to hold for states at or close to half-filling. For these states the eigenvalues of the transfer matrix of the t-J model satisfy a set of su(2) functional relations. The finite-size corrections to the relevant eigenvalues, and thus the surface effect on the spin excitations, have been calculated analytically by solving the functional relations.

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JO - Nuclear Physics B

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Spin excitations in the integrable open quantum group invariant supersymmetric t-J model

Abstract

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