Bosons in fluctuating gauge fields: Bose metal and phase separation
Superconductivity
2008-12-18 v2 Statistical Mechanics
Strongly Correlated Electrons
Abstract
We study a two-dimensional system of bosons interacting with a fluctuating U(1) gauge field with overdamped dynamics. We find two instabilities of the condensed phase at T=0: one to phase separation and another to a homogeneous non-superfluid (Bose metal). The presence of both instabilities in the model is dependent on the low-energy form of the gauge field propagator. We discuss the relevance of our findings to the U(1) gauge theory of the t--J model.
Keywords
Cite
@article{arxiv.cond-mat/0203274,
title = {Bosons in fluctuating gauge fields: Bose metal and phase separation},
author = {Robert L. Jack and Derek K. K. Lee},
journal= {arXiv preprint arXiv:cond-mat/0203274},
year = {2008}
}
Comments
8 pages, 7 figures, to appear in Phys Rev B