Physics – Condensed Matter – Statistical Mechanics
Scientific paper
2005-12-08
Physics
Condensed Matter
Statistical Mechanics
14 pages, 3 figures. to appear in J. Stat. Mech
Scientific paper
10.1088/1742-5468/2006/08/P08017
We investigate the dynamic critical exponent of the two-dimensional Ising model defined on a curved surface with constant negative curvature. By using the short-time relaxation method, we find a quantitative alteration of the dynamic exponent from the known value for the planar Ising model. This phenomenon is attributed to the fact that the Ising lattices embedded on negatively curved surfaces act as ones in infinite dimensions, thus yielding the dynamic exponent deduced from mean field theory. We further demonstrate that the static critical exponent for the correlation length exhibits the mean field exponent, which agrees with the existing results obtained from canonical Monte Carlo simulations.
Sakaniwa Yasunori
Shima Hiroyuki
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