Weak Coupling Phase Diagram of the Two Chain Hubbard Model
Condensed Matter
2016-08-31 v1
Abstract
We present a general method for determining the phase diagram of systems of a finite number of one dimensional Hubbard--like systems coupled by single--particle hopping with weak interactions. The technique is illustrated by detailed calculations for the two--chain Hubbard model, providing the first controlled results for arbitrary doping and inter-chain hopping. Of nine possible states which could occur in such a spin-- ladder, we find seven at weak coupling. We discuss the conditions under which the model can be regarded as a one--dimensional analog of a superconductor.
Keywords
Cite
@article{arxiv.cond-mat/9503045,
title = {Weak Coupling Phase Diagram of the Two Chain Hubbard Model},
author = {Leon Balents and Matthew P. A. Fisher},
journal= {arXiv preprint arXiv:cond-mat/9503045},
year = {2016}
}
Comments
5 pages, self-unpacking uuencoded compressed postscript file. Also available on the WWW at http://rheims.itp.ucsb.edu/~balents/index.html