Entanglement in composite free-fermion systems
Statistical Mechanics
2015-07-09 v3
Abstract
We consider fermionic chains where the two halves are either metals with different bandwidths or a metal and an insulator. Both are coupled together by a special bond. We study the ground-state entanglement entropy between the two pieces, its dependence on the parameters and its asymptotic form. We also discuss the features of the entanglement Hamiltonians in both subsystems and the evolution of the entanglement entropy after joining the two parts of the system.
Cite
@article{arxiv.1503.09116,
title = {Entanglement in composite free-fermion systems},
author = {Viktor Eisler and Ming-Chiang Chung and Ingo Peschel},
journal= {arXiv preprint arXiv:1503.09116},
year = {2015}
}
Comments
20 pages, 13 figures, published version, minor corrections, references added