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Luttinger liquid parameter for the spin-1 Heisenberg chain in a magnetic field

Ian Affleck
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Abstract

A recently derived general formula and older numerical results are combined to deduce the behavior of the transverse correlation exponent for the spin-1 Heisenberg antiferromagnetic chain in an applied magnetic field: eta = 1/2 - (2.0)m +O(m^2), where m is the magnetization per site. A comparison with the O(3) non-linear sigma-model is also made.

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Ian Affleck. 2005-08-15. Luttinger liquid parameter for the spin-1 Heisenberg chain in a magnetic field. https://doi.org/10.1103/physrevb.72.132414

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