3 papers
cond-mat.mes-hall2026
Complex Wannier centers and drifting Wannier functions in non-Hermitian Hamiltonians
Pedro Fittipaldi de Castro, Yifan Wang, Wladimir A. Benalcazar
The extension of topological band theory to non-Hermitian Hamiltonians with line energy gaps remains largely unexplored, despite early indications of rich underlying physics. In th…
hep-th2025
Factorizing Defects from Generalized Pinning Fields
Fedor K. Popov, Yifan Wang
We introduce generalized pinning fields in conformal field theory that model a large class of critical impurities at large distance, enriching the familiar universality classes. We…
hep-th2024
Surprises in the Ordinary: Invariant Surface Defect in the -expansion
Oleksandr Diatlyk, Zimo Sun, Yifan Wang
We study an invariant surface defect in the Wilson-Fisher conformal field theory (CFT) in dimensions. This defect is defined by mass deformation on a two-dimensional…