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arXiv 1206.0922hep-thhep-lathep-ph
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作为有效字符串的QCD字符串

QCD String as an Effective String

Yuri Makeenko

摘要:

有两种情况下QCD弦可以用长弦的有效理论来描述:雷奇区的静势和介子散射振幅。我展示了如何前者可以解决的平均场近似,证明了大量的时空维度,并认为它原来是准确的南部-后藤字符串。通过增加非本征曲率,我演示了如何快子不稳定的基态能量可以治愈的运营商在红外相关。

英文摘要:

There are two cases where QCD string is described by an effective theory of long strings: the static potential and meson scattering amplitudes in the Regge regime. I show how the former can be solved in the mean-field approximation, justified by the large number of space-time dimensions, and argue that it turns out to be exact for the Nambu--Goto string. By adding extrinsic curvature I demonstrate how the tachyonic instability of the ground-state energy can be cured by operators less relevant in the infrared.

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。

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