High-temperature expansions through order 24 for the two-dimensional classical XY model on the square lattice

Department of Physics, University of Milan, Milano, Lombardy, Italy
Physical review. B, Condensed matter (Impact Factor: 3.66). 11/2007; 76(9). DOI: 10.1103/PhysRevB.76.092406
Source: arXiv


The high-temperature expansion of the spin-spin correlation function of the two-dimensional classical XY (planar rotator) model on the square lattice is extended by three terms, from order 21 through order 24, and analyzed to improve the estimates of the critical parameters.

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Available from: P. Butera, Nov 15, 2012
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