Report on 1807.10176v1

Abstract

We extend the semiclassical picture for the spreading of entanglement and correlations to quantum quenches with several species of quasiparticles that have non-trivial pair correlations in momentum space.These pair correlations are, for example, relevant in inhomogeneous lattice models with a periodically-modulated Hamiltonian parameter.We provide explicit predictions for the spreading of the entanglement entropy in the space-time scaling limit.We also predict the time evolution of one-and two-point functions of the order parameter for quenches within the ordered phase.We test all our predictions against exact numerical results for quenches in the Ising chain with a modulated transverse field and we find perfect agreement.

Locations

• arXiv (Cornell University) - PDF