Mauricio Romo:Hemisphere partition function, Landau-Ginzburg orbifolds and FJRW invariants

Abstract: We consider LG orbifolds and the central charges of their B-branes (equivariant matrix factorizations). We will focus on the hemisphere partition function on the gauged linear  sigma model (GLSM) extension of certain LG orbifolds (even though our proposal does not require a GLSM embedding), and how this provides information about their Gamma class, I/J-function and some predictions about FJRW invariants.