Low-energy Effective Theory for One-dimensional Lattice Bosons near Integer Filling
Superconductivity
2009-11-13 v2 Strongly Correlated Electrons
Abstract
A low-energy effective theory for interacting bosons on a one-dimensional lattice at and near integer fillings is proposed. It is found that two sets of bosonic phase fields are necessary in order to explain the complete phase diagram. Using the present effective theory, the nature of the quantum phase transitions among various phases can be identified. Moreover, the general condition for the appearance of the recently proposed Pfaffian-like state can be realized from our effective action.
Keywords
Cite
@article{arxiv.cond-mat/0703015,
title = {Low-energy Effective Theory for One-dimensional Lattice Bosons near Integer Filling},
author = {Yu-Wen Lee and Yu-Li Lee and Min-Fong Yang},
journal= {arXiv preprint arXiv:cond-mat/0703015},
year = {2009}
}
Comments
6 pages, 2 figures, 1 table