https://doi.org/10.1140/epjb/e2014-50460-2
Regular Article
Coupled Korteweg de Vries solitary wave of superfluid Bose-Fermi mixture
1 College of Physics and Electronic Engineering, Northwest Normal University, Lanzhou 730070, P.R. China
2 Department of Mathematics, Nationalities College of Qinghai Normal University, Xining 810008, P.R. China
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e-mail: duanws@126.com
Received: 7 July 2014
Received in final form: 25 September 2014
Published online: 17 November 2014
In this paper, the solitary waves in superfluid Bose-Fermi mixture are investigated under the limited case of a BEC regime, a BCS regime and unitarity. By using the transverse perturbation method, a coupled Korteweg de Vries (KdV) equation for the nonlinear solitary waves is derived. It is found that the scattering length between bosons and fermions has strong effect on the characters of the coupled solitary wave.
Key words: Statistical and Nonlinear Physics
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2014
