In this talk, we will introduce 4d superconformal index, which is a type of Witten index, when taking the Schur limit, it is called Schur index
and has nice mathematical properties. We study the case of unflavored Schur index for the BCD-type gauge groups by two methods and
discover some interesting new features.
Links:
[1] https://www.mpim-bonn.mpg.de/taxonomy/term/39
[2] https://www.mpim-bonn.mpg.de/node/3444
[3] https://www.mpim-bonn.mpg.de/node/158