标题： 三维规范Ising模型中的弦效应 显示英文标题

标题： String effects in the 3d gauge Ising model

摘要： 我们将有效弦描述的禁闭预测与三维规范伊辛模型在有限温度下的Monte Carlo数据集进行了比较。 由于利用了该模型的对偶对称性的一种新算法，即使对于较大的夸克-反夸克距离，我们也能达到非常高的精度。 因此，我们能够探索有效弦的大R区域。 我们发现，对于足够大的距离和足够低的温度，数据可以用纯玻色弦很好地描述。 随着温度的升高，高阶修正变得重要，即使在大距离下也不能忽略这些修正。 这些高阶修正似乎可以用Nambu-Goto作用量在一级微扰展开下很好地描述。 显示英文摘要

摘要： We compare the predictions of the effective string description of confinement with a set of Montecarlo data for the 3d gauge Ising model at finite temperature. Thanks to a new algorithm which makes use of the dual symmetry of the model we can reach very high precisions even for large quark-antiquark distances. We are thus able to explore the large R regime of the effective string. We find that for large enough distances and low enough temperature the data are well described by a pure bosonic string. As the temperature increases higher order corrections become important and cannot be neglected even at large distances. These higher order corrections seem to be well described by the Nambu-Goto action truncated at the first perturbative order.