Phase transitions and bunching of correlated particles in a non-Hermitian quasicrystal
Stefano Longhi
Abstract
Strongly correlated systems in non-Hermitian models are an emergent area of research. Here, the author considers the correlated hopping dynamics of two fermions in a quasicrystal with a complex phase, unraveling non-Hermitian-induced mobility edges and the tendency of the fermions to stick together, forming a doublon state in the long time limit of evolution, a phenomenon that can be dubbed non-Hermitian particle bunching.
Topics & Concepts
QuasicrystalHermitian matrixPhase (matter)PhysicsCondensed matter physicsPhase transitionMathematicsQuantum mechanicsQuantum Mechanics and Non-Hermitian PhysicsQuasicrystal Structures and PropertiesQuantum chaos and dynamical systems