Confinement-deconfinement transition in two-coupled chains with umklapp scattering
Strongly Correlated Electrons
2009-10-31 v1
Abstract
A role of umklapp scattering has been examined for two-coupled chains with both forward and backward scatterings by applying renormalization group method to bosonized Hamiltonian. It has been found that a state with relevant interchain hopping changes into a state with irrelevant (confined) one when the magnitude of umklapp scattering becomes larger than that of interchain hopping. Critical value of umklapp scattering for such a confinement-deconfinement transition is calculated as the function of interchain hopping and intrachain interactions. A crossover from one-dimensional regime into that of coupled chains is also shown with decreasing temperature.
Cite
@article{arxiv.cond-mat/9903135,
title = {Confinement-deconfinement transition in two-coupled chains with umklapp scattering},
author = {M. Tsuchiizu and Y. Suzumura},
journal= {arXiv preprint arXiv:cond-mat/9903135},
year = {2009}
}
Comments
13 pages, 7 figures, to be published in Phys. Rev. B