闭N=2弦圈振幅的Ward恒等式与消失定理
高能物理 - 理论
2009-10-31 v1
摘要
利用N=2弦的手征BRST上同调中ghost数为零算符的基环之存在性,我们推导了闭弦散射振幅在任意亏格下的无穷多Ward恒等式。这些恒等式足以重新导出众所周知的具有多于三条外腿的圈振幅消失定理。
引用
@article{arxiv.hep-th/9912016,
title = {Ward identities and the vanishing theorem for loop amplitudes of the closed N=2 string},
author = {Klaus Junemann and Olaf Lechtenfeld},
journal= {arXiv preprint arXiv:hep-th/9912016},
year = {2009}
}
备注
12 pages, 2 figures