MS Seminar (Mathematics - String Theory)

Speaker: Masataka Watanabe (Nagoya University)
Title: 6D moduli effective action and 2D chiral algebra
Date (JST): Fri, Jan 10, 2025, 13:30 - 15:00
Place: Balcony B
Related File: 3302.pdf
Abstract: I will use the effective action on the tensor branch moduli space to study large-R-charge operators of 6D SCFTs. This can be thought of as an application of the relatively new method called the large-charge expansion to the notoriously strongly-coupled, non-Lagrangian theories. Concretely, I will compute the OPE coefficients among half-BPS operators at large-R-charge in an asymptotic expansion. I will then use the 6D/2D correspondence of Beem, Rastelli and van Rees to map the OPE to the expansion coefficients of the Virasoro vacuum block in a certain double-scaling limit, at c = 25. I will finally conjecture the behaviour of the Virasoro vacuum block at general central charge in a double-scaling limit that has seldom been studied before. I argue that this could be interpreted as a semi-classicalisation of heavy vacuum descendants.