Critical properties of S= 1/2 antiferromagnetic XXZ chain with next-nearest-neighbour interactions
作者： K Nomura , K Okamoto
DOI: 10.1088/0305-4470/27/17/012
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摘要: We investigate numerically the critical lines and properties of fluid-dimer Neel-dimer transitions S= 1/2 antiferromagnetic XXZ chain with next-nearest interactions, we confirm that universality class this model belongs to quantum sine-Gordon model, as is expected from bosonization. The method which use in paper calculate free logarithmic corrections on Kosterlitz-Thouless (K-T)-type transition line, have made K-T point difficult obtain. By method, it possible determine line high precision small size data, identify class.
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