The A-Cycle Problem In XY model with Ring Frustration
Statistical Mechanics
2017-04-05 v1
Abstract
Traditionally, the transverse spin-1/2 XY model is mapped to a fermionic "c-cycle" problem, where the prior periodic boundary condition is applied to the fermionic chain and the additional boundary term has been neglected. However, the "a-cycle" problem (the original problem without any approximation) has not been treated seriously up to now. In this paper, we consider the XY model with ring frustration and diagonalize it without any approximation with the help of parity constraint. Then two peculiar gapless phases have been found.
Cite
@article{arxiv.1703.00595,
title = {The A-Cycle Problem In XY model with Ring Frustration},
author = {Jian-Jun Dong and Peng Li},
journal= {arXiv preprint arXiv:1703.00595},
year = {2017}
}
Comments
6 pages, 1 figures, to appear in Modern Physics Letters B