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Spreading of entanglement and correlations after a quench with intertwined quasiparticles
by Alvise Bastianello, Pasquale Calabrese
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Submission summary
| Authors (as registered SciPost users): | Alvise Bastianello |
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| Preprint Link: | https://arxiv.org/abs/1807.10176v2 (pdf) |
| Date accepted: | 2018-10-08 |
| Date submitted: | 2018-09-26 02:00 |
| Submitted by: | Bastianello, Alvise |
| Submitted to: | SciPost Physics |
| Ontological classification | |
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| Academic field: | Physics |
| Specialties: |
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| Approach: | Theoretical |
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.
Published as SciPost Phys. 5, 033 (2018)