Two-Component Structure in the Entanglement Spectrum of Highly Excited States
Two-Component Structure in the Entanglement Spectrum of Highly Excited States
We study the entanglement spectrum of highly excited eigenstates of two known models that exhibit a many-body localization transition, namely the one-dimensional random-field Heisenberg model and the quantum random energy model. Our results indicate that the entanglement spectrum shows a ``two-component'' structure: a universal part that is associated with random …