Equivalence of Spatial and Particle Entanglement Growth After a Quantum Quench
Abstract
We analyze fermions after an interaction quantum quench in one spatial dimension and study the growth of the steady state entanglement entropy density under either a spatial mode or particle bipartition. For integrable lattice models, we find excellent agreement between the increase of spatial and particle entanglement entropy, and for chaotic models, an examination of two further neighbor interaction strengths suggests similar correspondence. This result highlights the generality of the dynamical conversion of entanglement to thermodynamic entropy under time evolution that underlies our current framework of quantum statistical mechanics.
Keywords
Cite
@article{arxiv.1912.09947,
title = {Equivalence of Spatial and Particle Entanglement Growth After a Quantum Quench},
author = {Adrian Del Maestro and Hatem Barghathi and Bernd Rosenow},
journal= {arXiv preprint arXiv:1912.09947},
year = {2021}
}
Comments
11 pages. Now includes analysis of next-nearest-neighbor interactions. Updated code and data repository see, https://github.com/DelMaestroGroup/papers-code-EntanglementQuantumQuench