Entanglement Spectrum of Topological Insulators and Superconductors
Entanglement Spectrum of Topological Insulators and Superconductors
We study two a priori unrelated constructions: the spectrum of edge modes in a band topological insulator or superconductor with a physical edge, and the ground state entanglement spectrum in an extended system where an edge is simulated by an entanglement bipartition. We prove an exact relation between the ground …