Long range interaction induced density modulated state in a Bose-Einstein condensate
Quantum Gases
2015-11-27 v1
Abstract
We consider a Gross-Pitaevskii model of BEC with non-local s-wave scattering to study the density modulated state in 1D. We resort to a perturbative Taylor series expansion for the order parameter. By perturbative calculations, we show that under long range s-wave scattering a density modulated state is energetically favourable as compared to the uniform density state. We obtain density modulated state as a solution to the perturbative non-local GP equation, rather than the conventional approach of introducing amplitude modulations on top of the uniform density state and lowering the roton minimum.
Cite
@article{arxiv.1510.07843,
title = {Long range interaction induced density modulated state in a Bose-Einstein condensate},
author = {Abhijit Pendse and A. Bhattacharyay},
journal= {arXiv preprint arXiv:1510.07843},
year = {2015}
}
Comments
arXiv admin note: text overlap with arXiv:1407.2039