Abstract：

5d supersymmetric gauge theories with eight supercharges show various interesting properties, including global symmetry enhancements and dualities at the UV fixed point. Their brane constructions have provided an intuitive understanding of such phenomena. In this talk, as an extension of brane constructions, we discuss a new perspective of viewing theories involving an orientifold. In particular, with the introduction of an O7-plane, we can describe SO/Sp gauge theories depending on the charge of the O7-plane. We discuss the relation between their BPS spectra using the procedure called freezing of an O7-plane with flavor branes.

Bio：

Sung-Soo Kim is a professor in the School of Physics at  the University of Electronic Science and Technology of China (UESTC).  He received his Ph.D. degree in Theoretical Physics from the University of Florida in 2008 and has worked at Chalmers University of Technology, Université Libre de Bruxelles, and KIAS before joining UESTC.  His research interests focus on non-perturbative aspects of supersymmetric gauge theories using their brane constructions arising from string and M-theory.