4 papers
Virtual specialness of the double
Changqian Li
Let be a virtually compact special Gromov-hyperbolic group. We prove that the double along a quasiconvex subgroup is virtually compact special. More generally, we…
Finite Stature in Graphs of Cube Complexes with Cyclonormal Edges
Changqian Li
Given a compact cube complex that splits as a graph of virtually special cube complexes. Suppose that the fundamental groups of edge spaces are cyclonormal in the fundamental g…
Refined Low-Energy Supernova Constraints on Lepton Flavor Violating Axions
Zi-Miao Huang, Changqian Li, Zuowei Liu
The supernova (SN) core, characterized by its extreme temperature and density, serves as a unique laboratory for new-physics searches. Low-energy supernovae (LESNe) provide particu…
Low-Energy Supernova Constraints on Millicharged Particles
Changqian Li, Zuowei Liu, Wenxi Lu +1
The hot and dense conditions of the supernova core provide an ideal environment for the production of new feebly-interacting particles. Low-energy supernovae, characterized by low…