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arXiv 1701.07855hep-th
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关于玻色开弦的规范选择

On the gauge chosen by the bosonic open string

Igor Pesando

摘要:

弦论给出了S矩阵元素om,这是不可能读取任何规范信息的。使用因式分解,我们以最简单和最天真的方式离开shell,我们读到哪些是字符串建议的顶点。为了与相关的有效场论相比较,使用颜色排序顶点是很自然的。弦论提出的α '= 0色序顶点比通常的色序顶点更有效,因为三胶子色序顶点有三项而不是六项,四胶子色序顶点有一项而不是三项.它们被写在所谓的Gervais-Neveu规范中。完整的有效场论是对Gervais-Neveu规范进行α ')修正的推广。此外,场的重新定义需要被映射到弦论所使用的场。我们也给出了一个直观的方式来理解为什么弦选择这个规范的最小数量的耦合必要的复制非阿贝尔振幅从色序的。

英文摘要:

String theory gives S matrix elements om which is not possible to read any gauge information. Using factorization we go off shell in the simplest and most naive way and we read which are the vertices suggested by string. To compare with the associated Effective Field Theory it is natural to use color ordered vertices. The alpha'=0 color ordered vertices suggested by string theory are more efficient than the usual ones since the three gluon color ordered vertex has three terms instead of six and the four gluon one has one term instead of three. They are written in the so called Gervais-Neveu gauge. The full Effective Field Theory is in a generalization of the Gervais-Neveu gauge with alpha') corrections. Moreover a field redefinition is required to be mapped to the field used by string theory. We also give an intuitive way of understanding why string choose this gauge in terms of the minimal number of couplings necessary to reproduce the non abelian amplitudes starting from color ordered ones.

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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