The Veneziano amplitude via mostly BRST exact operator
The Veneziano amplitude via mostly BRST exact operator
复制标题
Veneziano 幅度主要通过 BRST 精确算子实现
DOI:
10.1016/j.nuclphysb.2021.115647
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发表时间:
2022
影响因子:
2.8
通讯作者:
Takahashi Tomohiko
中科院分区:
文献类型:
--
作者:
Kishimoto Isao;Sasaki Tomoko;Seki Shigenori;Takahashi Tomohiko
The Veneziano amplitude is derived from fixing one degree of freedom of P S L (2, R) symmetry by the insertion of a mostly BRST exact operator. Evaluating the five-point function which consists of four open string tachyons and this gauge fixing operator, we find it equals the Veneziano amplitude up to a sign factor. The sign factor is interpreted as a signed intersection number. The result implies that the mostly BRST exact operator, which is originally used to provide two-point string amplitudes, correctly fixes the P S L (2, R) gauge symmetry for general amplitudes. We conjecture an expression for general n-point tree amplitudes with an insertion of this gauge fixing operator.
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DOI:
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