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arXiv · hep-th/9605041

Ground State Structure and Low Temperature Behaviour of an Integrable Chain with Alternating Spins

B. -D. Doerfel·St. Meissner
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Abstract

In this paper we continue the investigation of an anisotropic integrable spin chain, consisting of spins $s=1$ and $s=\frac{1}{2}$, started in our paper \cite{meissner}. The thermodynamic Bethe ansatz is analysed especially for the case, when the signs of the two couplings $\bar{c}$ and $\tilde{c}$ differ. For the conformally invariant model ($\bar{c}=\tilde{c}$) we have calculated heat capacity and magnetic susceptibility at low temperature. In the isotropic limit our analysis is carried out further and susceptibilities are calculated near phase transition lines (at $T=0$).

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B. -D. Doerfel, St. Meissner. 1996-05-07. Ground State Structure and Low Temperature Behaviour of an Integrable Chain with Alternating Spins. https://doi.org/10.1088/0305-4470%2F29%2F20%2F006

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