title: Effective field theory of the zero-temperature triangular-lattice antiferromagnet: A monte carlo study
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.
authors.affiliation: The Martin Fisher School of Physics, Brandeis University, Waltham, Massachusetts 02454, USA.
authors.initials: H
authors.lastname: Yin
authors.initials: B
authors.lastname: Chakraborty
authors.initials: N
authors.lastname: Gross