Entanglement and Spontaneous Symmetry Breaking in Quantum Spin Models
Quantum Physics
2009-11-10 v1
Abstract
It is shown that spontaneous symmetry breaking does not modify the ground-state entanglement of two spins, as defined by the concurrence, in the XXZ- and the transverse field Ising-chain. Correlation function inequalities, valid in any dimensions for these models, are presented outlining the regimes where entanglement is unaffected by spontaneous symmetry breaking.
Keywords
Cite
@article{arxiv.quant-ph/0307087,
title = {Entanglement and Spontaneous Symmetry Breaking in Quantum Spin Models},
author = {Olav F. Syljuasen},
journal= {arXiv preprint arXiv:quant-ph/0307087},
year = {2009}
}