开口刚性弦的微扰宽度
Perturbative width of open rigid strings
摘要：
我们提出了微扰计算的宽度的刚性弦的能量分布的两个循环在D维。在Polyakov-Kleinert作用量中表征弦的刚性/光滑性的外曲率项的微扰展开是围绕自由的Nambu-Goto弦进行的。导出了具有Dirichlet边界条件的开弦的弦场的均方宽度。我们比较的光滑Polyakov-Kleinert字符串的扩展的晶格蒙特卡罗数据的QCD通量管之前的退禁闭点，并找到一个很好的匹配在中间和大的颜色源分离。
英文摘要：
We present perturbative calculation of the width of the energy profile of rigid strings up to two loops in D dimensions. The perturbative expansion of the extrinsic curvature term signifying the rigidity/smoothness of the string in Polyakov-Kleinert action is taken around the free Nambu-Goto string. The mean-square width of the string field is derived for open strings with Dirichlet boundary condition. We compare the broadening of the smooth Polyakov-Kleinert string to the lattice Mont-Carlo data of the QCD flux tube just before the deconfinement point and find a good match at the intermediate and large color source separation.
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