Yin H, Chakraborty B, Gross N
The Martin Fisher School of Physics, Brandeis University, Waltham, Massachusetts 02454, USA.
Phys Rev E Stat Phys Plasmas Fluids Relat Interdiscip Topics. 2000 Jun;61(6 Pt A):6426-33. doi: 10.1103/physreve.61.6426.
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.
利用Binder [《物理学报B》43, 119 (1981)] 引入的蒙特卡罗粗粒化技术，我们明确构建了零温三角伊辛反铁磁体的连续场论。我们验证了这样一个猜想，即在自旋模型的界面表示中，这是一个关于高度变量的高斯理论。我们还测量了高度 - 高度关联函数并推导了刚度常数。此外，我们研究了有限温度下缺陷 - 缺陷相互作用的性质，发现二维库仑气体情形在低温下适用。
