Entanglement Spectrum of the Two-Dimensional Bose-Hubbard Model
Entanglement Spectrum of the Two-Dimensional Bose-Hubbard Model
We study the entanglement spectrum (ES) of the Bose-Hubbard model on the two-dimensional square lattice at unit filling, both in the Mott insulating and in the superfluid phase. In the Mott phase, we demonstrate that the ES is dominated by the physics at the boundary between the two subsystems. On …