SO(5) Superconductors in a Zeeman Magnetic Field
Superconductivity
2009-10-31 v1 Strongly Correlated Electrons
Abstract
The generic symmetry of a system under a uniform Zeeman magnetic field is U(1) x U(1). However, we show that SO(5) models in the presence of a finite chemical potential and a finite Zeeman magnetic field can have a exact SU(2) x U(1) symmetry. This principle can be used to test SO(5) symmetry at any doping level.
Cite
@article{arxiv.cond-mat/9912261,
title = {SO(5) Superconductors in a Zeeman Magnetic Field},
author = {Jiang-Ping Hu and Shou-Cheng Zhang},
journal= {arXiv preprint arXiv:cond-mat/9912261},
year = {2009}
}