Skin effect and winding number in disordered non-Hermitian systems
Skin effect and winding number in disordered non-Hermitian systems
Unlike their Hermitian counterparts, non-Hermitian (NH) systems may display an exponential sensitivity to boundary conditions and an extensive number of edge-localized states in systems with open boundaries, a phenomena dubbed the ``non-Hermitian skin effect.'' The NH skin effect is one of the primary challenges to defining a topological theory of …