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arXiv 2108.05628hep-th
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开弦振幅的大部分BRST正合算子约化

Reduction of Open String Amplitudes by Mostly BRST Exact Operators

Shigenori Seki, Tomohiko Takahashi

摘要:

我们研究了开弦的两点和三点树级振幅。这些振幅减少从高点关联函数通过使用大部分BRST精确运营商的规范固定。为了简单起见,我们集中在一个开弦快子。开弦快子的两点振幅由两个快子顶点算符和一个大部分BRST精确算符的三点函数约化。类似地,三点振幅来自三个快子顶点算子和一个主要是BRST精确算子的四点函数。我们也可以从两个快子顶点算符和两个大部分BRST精确算符的四点函数中得到两点振幅。在这些四点函数的推导中,模积分是重要的。我们讨论的振幅是不确定的,在这个形式主义的整体迹象。

英文摘要:

We study two and three-point tree-level amplitudes of open strings. These amplitudes are reduced from higher-point correlation functions by using mostly BRST exact operators for gauge fixing. For simplicity, we focus on an open string tachyon. The two-point amplitude of open string tachyons is reduced from a three-point function of two tachyon vertex operators and one mostly BRST exact operator. Similarly the three-point amplitude is from a four-point function of three tachyon vertex operators and one mostly BRST exact operator. One can also obtain the two-point amplitude from the four-point function of two tachyon vertex operators and two mostly BRST exact operators. In these derivation from four-point functions, moduli integrals are significant. We discuss the overall signs of amplitudes which are indefinite in this formalism.

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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