Speaker
Yiming Chen
Description
It has recently been proposed that supersymmetric black hole microstates exhibit “fortuity”: their very existence depends sensitively on the finite, precise values of N, the number of degrees of freedom in the dual theory. In this talk, after reviewing the core ideas of fortuity in both large-N gauge theories and toy models such as the SYK model, I will describe a simple matrix quantum-mechanical model containing a single adjoint fermion. I will show that the model is exactly solvable while containing many fortuitous states. Using the model, I will sketch how properties of fortuity - particularly the sensitivity to N - can be seen using techniques such as the unitary matrix integral. The talk will be based on arXiv:2511.00790.
