Chang-Tse Hsieh

Jul 11, 2024 | link.aps.org | Linhao Li |Chang-Tse Hsieh |Yuan Yao |Shanghai Jiao Tong

We study a relationship between conformally invariant boundary conditions and anomalies of conformal field theories (CFTs) in 1+1 dimensions. For a given CFT with a global symmetry, we consider symmetric “gapping potentials”, which are relevant perturbations to the CFT. If a gapping potential is introduced only in a subregion of the system, it provides a certain boundary condition to the CFT.