用算符形式论重访两点弦振幅
高能物理 - 理论
2020-01-08 v3
摘要
迄今为止，我们认为两点弦振幅由于剩余规范对称的无限体积而消失。然而最近Erbin-Maldacena-Skliros提出，两点振幅可以具有非零值，因为人们可以用来自壳上能量守恒的无穷大抵消该无限体积。他们通过Fadeev-Popov方法推导了两点的函数。本文中我们用算符形式论重访这一两点弦振幅。我们发现给出非零两点振幅的近乎BRST精确算符。
引用
@article{arxiv.1909.03672,
title = {Two-point String Amplitudes Revisited by Operator Formalism},
author = {Shigenori Seki and Tomohiko Takahashi},
journal= {arXiv preprint arXiv:1909.03672},
year = {2020}
}
备注
8 pages; v2: the normalization of ${\cal V_0}$ is fixed, the conclusion does not change; v3: the discussion about closed string is modified, comments on n-point amplitude are added, refs added, version for publication