Critical Behaviour of integrable mixed spins chains

Details Critical Behaviour of integrable mixed spins chains Critical Behaviour of integrable mixed spins chains

1997-04-08

arxiv.org/abs/cond-mat/9704063v1

J.Phys.A:Math.Gen. 26 (1993) L529

Physics

Condensed Matter

Statistical Mechanics

This was the first correct calculation of the central charge in mixed integrable spin chains. For effects of a magnetic field

Scientific paper

10.1088/0305-4470/26/12/009

We construct a mixed spin 1/2 and $S$ integrable model and investigate its
finite size properties. For a certain conformal invariant mixed spin system the
central charge can be decomposed in terms of the conformal anomaly of two
single integrable models of spin 1/2 and spin $(S-1/2)$. We also compute the
ground state energy and the sound velocity in the thermodynamic limit.

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