The entanglement entropy of one-dimensional gases
Statistical Mechanics
2011-07-07 v2 Quantum Gases
Quantum Physics
Abstract
We introduce a systematic framework to calculate the bipartite entanglement entropy of a spatial subsystem in a one-dimensional quantum gas which can be mapped into a noninteracting fermion system. To show the wide range of applicability of the proposed formalism, we use it for the calculation of the entanglement in the eigenstates of periodic systems, in a gas confined by boundaries or external potentials, in junctions of quantum wires and in a time-dependent parabolic potential.
Keywords
Cite
@article{arxiv.1105.4756,
title = {The entanglement entropy of one-dimensional gases},
author = {Pasquale Calabrese and Mihail Mintchev and Ettore Vicari},
journal= {arXiv preprint arXiv:1105.4756},
year = {2011}
}
Comments
4 pages, 2 figures. v2: Typos corrected