Universal entanglement spectra of gapped one-dimensional field theories
Universal entanglement spectra of gapped one-dimensional field theories
We discuss the entanglement spectrum of the ground state of a (1+1)-dimensional system in a gapped phase near a quantum phase transition. In particular, in proximity to a quantum phase transition described by a conformal field theory (CFT), the system is represented by a gapped Lorentz invariant field theory in …