Solution of the fermionic entanglement problem with interface defects
Statistical Mechanics
2010-07-26 v3
Abstract
We study the ground-state entanglement of two halves of a critical transverse Ising chain, separated by an interface defect. From the relation to a two-dimensional Ising model with a defect line we obtain an exact expression for the continuously varying effective central charge. The result is relevant also for other fermionic chains.
Keywords
Cite
@article{arxiv.1005.2144,
title = {Solution of the fermionic entanglement problem with interface defects},
author = {Viktor Eisler and Ingo Peschel},
journal= {arXiv preprint arXiv:1005.2144},
year = {2010}
}
Comments
15 pages, 6 figures, changed title and minor modifications in published version