The disk partition function in string theory
The disk partition function in string theory
复制标题
弦论中的磁盘分区函数
DOI:
10.1007/jhep08(2021)026
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发表时间:
2021
影响因子:
5.4
通讯作者:
Sridip Pal
中科院分区:
文献类型:
--
作者:
Lorenz Eberhardt;Sridip Pal
We investigate the disk partition function for the open string. This is a subtle problem because of the presence of a residual gauge group PSL (2, ℝ) on the worldsheet even after fixing the conformal gauge. It naively has infinite volume and leads to a vanishing answer. We use different methods that all demonstrate that PSL (2, ℝ) effectively behaves like a group with finite negative volume in the path integral, which leads to a simple prescription for the computation of the disk partition function. We apply our findings to give a simple rederivation of the D-brane tensions.