Phase transitions and bunching of correlated particles in a non-Hermitian quasicrystal

Strongly correlated systems in non-Hermitian models are an emergent area of research. Here, the author considers hopping dynamics two fermions a quasicrystal with complex phase, unraveling non-Hermitian-induced mobility edges and tendency to stick together, forming doublon state long time limit evolution, phenomenon that can be dubbed particle bunching.