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Effective field theory of the zero-temperature triangular-lattice antiferromagnet: A monte carlo study
Yin1, Chakraborty, Gross
1The Martin Fisher School of Physics, Brandeis University, Waltham, Massachusetts 02454, USA.
Abstract:
Using a Monte Carlo coarse-graining technique introduced by Binder [Z. Phys. B 43, 119 (1981)], we have explicitly constructed the continuum field theory for the zero-temperature triangular Ising antiferromagnet. We verify the conjecture that this is a Gaussian theory of the height variable in the interface representation of the spin model. We also measure the height-height correlation function and deduce the stiffness constant. In addition, we investigate the nature of defect-defect interactions at finite temperatures, and find that the two-dimensional Coulomb gas scenario applies at low temperatures.
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