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High temperature study of the Kosterlitz-Thouless phase transition in the XY model on the triangular lattice

P. Butera·M. Comi
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Abstract

High temperature series expansions of the spin-spin correlation function for the XY (or plane rotator) model on the triangular lattice are extended by two terms up to order beta^{14}. Tables of the expansion coefficients are reported for the correlation function spherical moments of order l=0 and 2. Our analysis of the series supports the Kosterlitz-Thouless predictions on the structure of the critical singularities and leads to fairly accurate estimates of the critical parameters.

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P. Butera, M. Comi. 1999-02-24. High temperature study of the Kosterlitz-Thouless phase transition in the XY model on the triangular lattice. https://doi.org/10.1103/physrevb.50.3052

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