Publications (7)
Landau-Ginzburg Orbifolds and Symmetries of K3 CFTs
Miranda C. N. Cheng, Francesca Ferrari, Sarah M. Harrison +1
Recent developments in the study of the moonshine phenomenon, including umbral and Conway moonshine, suggest that it may play an important role in encoding the action of finite sym…
3-Manifolds and VOA Characters
Miranda C. N. Cheng, Sungbong Chun, Boris Feigin +4
By studying the properties of -series -invariants, we develop a dictionary between 3-manifolds and vertex algebras. In particular, we generalize previously known ent…
Three-Manifold Quantum Invariants and Mock Theta Functions
Miranda C. N. Cheng, Francesca Ferrari, Gabriele Sgroi
Mock modular forms have found applications in numerous branches of mathematical sciences since they were first introduced by Ramanujan nearly a century ago. In this proceeding we h…
Mixed Rademacher and BPS Black Holes
Francesca Ferrari, Valentin Reys
Dyonic 1/4-BPS states in Type IIB string theory compactified on are counted by meromorphic Jacobi forms. The finite parts of these functions, which are mix…
Supergroups, q-series and 3-manifolds
Francesca Ferrari, Pavel Putrov
We introduce supergroup analogues of 3-manifold invariants , also known as homological blocks, which were previously considered for ordinary compact semisimple Lie groups.…
3d Modularity
Miranda C. N. Cheng, Sungbong Chun, Francesca Ferrari +2
We find and propose an explanation for a large variety of modularity-related symmetries in problems of 3-manifold topology and physics of 3d theories where such str…
Properties of extremal CFTs with small central charge
Francesca Ferrari, Sarah M. Harrison
We analyze aspects of extant examples of 2d extremal chiral (super)conformal field theories with . These are theories whose only operators with dimension smaller or equal…