arXivDaily arXiv每日学术速递 周一至周五更新
北美退伍军人节(Veterans Day),12 日无更新
arXiv 1006.2252hep-lathep-phhep-th
收藏

二回路级彩色磁通管的宽度

The Width of the Color Flux Tube at 2-Loop Order

F. Gliozzi, M. Pepe, U. -J. Wiese

摘要:

杨-米尔斯理论中连接静态夸克-反夸克对的色通管支持无质量横向涨落,这是自发破缺平移不变性的Goldstone玻色子。就像手征微扰理论一样,这些戈德斯通玻色子的动力学是由系统的低能有效场论描述的。我们使用的有效理论计算的波动弦的宽度在2圈的水平,使用圆柱和环形边界条件。在零温度下,弦的宽度随夸克-反夸克距离r的变化而变化。另一方面,在低但非零的温度T = 1/β,当r >> β时,弦宽线性发散。

英文摘要:

The color flux tube connecting a static quark-anti-quark pair in Yang-Mills theory supports massless transverse fluctuations, which are the Goldstone bosons of spontaneously broken translation invariance. Just as in chiral perturbation theory, the dynamics of these Goldstone bosons is described by a systematic low-energy effective field theory. We use the effective theory to calculate the width of the fluctuating string at the 2-loop level, using both cylindrical and toroidal boundary conditions. At zero temperature, the string width diverges logarithmically with the quark-anti-quark distance r. On the other hand, at low but non-zero temperature T = 1/β, for r >> β, the string width diverges linearly.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑