报告题目：Instanton counting in BCD-type gauge theories and O-vertex

报告人：朱睿东 副教授（苏州大学）

报告时间：2022年4月7日（周四）下午15:30-16:30

报告地点：在线报告（腾讯会议ID：442 4477 5872）

报告摘要：

Localization method together with ADHM construction provide a powerful way to compute the exact partition function of 8 SUSY gauge theories. In particular, Nekrasov’s partition function is an interesting quantity because it contains the non-perturbative corrections from instantons. It is, however, known to be difficult to perform the integrals that appear in the computation of instanton partition functions of BCD-type gauge theories in an analytic way. In this talk, we propose an analytic expression for these integrals in the unrefined limit in the form of summation over Young diagrams. Our results are inspired by the topological vertex formalism in topological string theory. We will also mention some results of our ongoing projects if time allows. 

参考文献：

[1] S. Nawata, R.-D. Zhu, Instanton counting and O-vertex, JHEP 09 (2021) 190 [arXiv:2107.03656].

[2] H. Hayashi, R.-D. Zhu, More on topological vertex formalism for 5-brane webs with O5-plane, JHEP 04 (2021) 292 [arXiv:2012.13303].

报告人简介：

朱睿东，主要从事N=2超对称场论及共形场论相关的研究。2019年博士毕业于日本东京大学，其后赴爱尔兰都柏林高等研究院从事博士后研究。2020年末加入苏州大学高等研究院任职。

报告链接：

Instanton counting in BCD-type gauge theories and O-vertex_哔哩哔哩_bilibili