Localization of the gauged linear sigma model for KK5-branes
Localization of the gauged linear sigma model for KK5-branes
复制标题
KK5 膜的测量线性西格玛模型的本地化
DOI:
10.1093/ptep/ptab031
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发表时间:
2021
影响因子:
3.5
通讯作者:
Yuki Sato
中科院分区:
文献类型:
--
作者:
Yuki Hiraga;Yuki Sato
We study quantum aspects of the target space of the non-linear sigma model, which is a low-energy effective theory of the gauged linear sigma model (GLSM). As such, we especially compute the exact sphere partition function of the GLSM for KK-branes whose background geometry is a Taub–NUT space, using the supersymmetric localization technique on the Coulomb branch. From the sphere partition function, we distill the world-sheet instanton effects. In particular, we show that, concerning the single-centered Taub–NUT space, instanton contributions exist only if the asymptotic radius of thefiber in the Taub–NUT space is zero.