Mean-field and stability analysis of two-dimensional flowing soft-core bosons modeling a supersolid
Quantum Gases
2012-09-18 v3
Abstract
The soft-core boson system is one of the simplest models of supersolids, which have both off-diagonal long-range order (Bose-Einstein condensation) and diagonal long-range order (crystalline order). Although this model has been studied from various points of view, studies of the stability of current-flowing states are lacking. Solving the Gross-Pitaevskii and Bogoliubov equations, we obtain excitation spectra in superfluid, supersolid, and stripe phases. On the basis of the results of the excitation spectra, we present a stability phase diagram that shows the region of the metastable superflow states for each phase.
Keywords
Cite
@article{arxiv.1205.2126,
title = {Mean-field and stability analysis of two-dimensional flowing soft-core bosons modeling a supersolid},
author = {Masaya Kunimi and Yusuke Kato},
journal= {arXiv preprint arXiv:1205.2126},
year = {2012}
}
Comments
7 pages, 5 figures