Localization of the gauged linear sigma model for KK5-branes

Localization of the gauged linear sigma model for KK5-branes
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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
Yuki Sato
中科院分区:
物理与天体物理4区
文献类型:
--
作者:
Yuki Hiraga;Yuki Sato

文献摘要

相似文献

我们研究非线性西格玛模型目标空间的量子方面,这是计量线性西格玛模型(GLSM)的低能有效理论。因此,我们特别使用库仑分支上的超对称定位技术,计算背景几何结构为 Taub-NUT 空间的 KK-膜 GLSM 的精确球体配分函数。从球体配分函数中,我们提取了世界表瞬子效应。特别地,我们表明,对于单中心 Taub-NUT 空间,仅当 Taub-NUT 空间中光纤的渐近半径为零时,瞬子贡献才存在。
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.