Thermodynamic Bethe Ansatz for the Spin-1/2 Staggered XXZ- Model

Details Thermodynamic Bethe Ansatz for the Spin-1/2 Staggered XXZ- Model Thermodynamic Bethe Ansatz for the Spin-1/2 Staggered XXZ- Model

2003-02-24

arxiv.org/abs/hep-th/0302185v1

Nucl.Phys. B673 (2003) 455-475

Physics

High Energy Physics

High Energy Physics - Theory

21 pages, 1 figure

Scientific paper

10.1016/j.nuclphysb.2003.08.045

We develop the technique of Thermodynamic Bethe Ansatz to investigate the ground state and the spectrum in the thermodynamic limit of the staggered $XXZ$ models proposed recently as an example of integrable ladder model. This model appeared due to staggered inhomogeneity of the anisotropy parameter $\Delta$ and the staggered shift of the spectral parameter. We give the structure of ground states and lowest lying excitations in two different phases which occur at zero temperature.

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