Tensionless String Limits in 4d Conformal Manifolds
Tensionless String Limits in 4d Conformal Manifolds
Drawing on insights from the Swampland program, we initiate a classification of infinite distance limits in the conformal manifolds of 4d SCFTs. Each limit is characterized by a Hagedorn-like behavior of the large $N$ density of states, which we argue holographically correspond to different tensionless string limits. We focus on …