Spreading of entanglement and correlations after a quench with intertwined quasiparticles
Alvise Bastianello, Pasquale Calabrese
SciPost Phys. 5, 033 (2018) · published 15 October 2018
- doi: 10.21468/SciPostPhys.5.4.033
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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.
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Authors / Affiliations: mappings to Contributors and Organizations
See all Organizations.- 1 2 Alvise Bastianello,
- 1 2 3 Pasquale Calabrese
- 1 Scuola Internazionale Superiore di Studi Avanzati / International School for Advanced Studies [SISSA]
- 2 Istituto Nazionale di Fisica Nucleare (presso la SISSA) / National Institute of Nuclear Physics (at SISSA) [INFN at SISSA]
- 3 Centro Internazionale di Fisica Teorica Abdus Salam / Abdus Salam International Centre for Theoretical Physics [ICTP]