The "topological" charge for the finite XX quantum chain
Statistical Mechanics
2009-10-31 v1
Abstract
It is shown that an operator (in general non-local) commutes with the Hamiltonian describing the finite XX quantum chain with certain non-diagonal boundary terms. In the infinite volume limit this operator gives the "topological" charge.
Cite
@article{arxiv.cond-mat/0004241,
title = {The "topological" charge for the finite XX quantum chain},
author = {Ulrich Bilstein and Vladimir Rittenberg},
journal= {arXiv preprint arXiv:cond-mat/0004241},
year = {2009}
}
Comments
5 pages