Please use this identifier to cite or link to this item:
Full metadata record
|dc.contributor.author||Adhikari, Sadhan K.||-|
|dc.identifier.citation||Physical Review A. College Pk: Amer Physical Soc, v. 76, n. 5, 13 p., 2007.||-|
|dc.description.abstract||We study the phase diagram for a dilute Bardeen-Cooper-Schrieffer superfluid Fermi-Fermi mixture (of distinct mass) at zero temperature using energy densities for the superfluid fermions in one (1D), two (2D), and three (3D) dimensions. We also derive the dynamical time-dependent nonlinear Euler-Lagrange equation satisfied by the mixture in one dimension using this energy density. We obtain the linear stability conditions for the mixture in terms of fermion densities of the components and the interspecies Fermi-Fermi interaction. In equilibrium there are two possibilities. The first is that of a uniform mixture of the two components, the second is that of two pure phases of two components without any overlap between them. In addition, a mixed and a pure phase, impossible in 1D and 2D, can be created in 3D. We also obtain the conditions under which the uniform mixture is stable from an energetic consideration. The same conditions are obtained from a modulational instability analysis of the dynamical equations in 1D. Finally, the 1D dynamical equations for the system are solved numerically and by variational approximation (VA) to study the bright solitons of the system for attractive interspecies Fermi-Fermi interaction in 1D. The VA is found to yield good agreement to the numerical result for the density profile and chemical potential of the bright solitons. The bright solitons are demonstrated to be dynamically stable. The experimental realization of these Fermi-Fermi bright solitons seems possible with present setups.||en|
|dc.publisher||Amer Physical Soc||-|
|dc.source||Web of Science||-|
|dc.title||Superfluid Fermi-Fermi mixture: Phase diagram, stability, and soliton formation||en|
|dc.contributor.institution||Universidade Estadual Paulista (UNESP)||-|
|dc.description.affiliation||São Paulo State Univ, Inst Fis Teor, UNESP, BR-01405900 São Paulo, Brazil||-|
|dc.description.affiliationUnesp||São Paulo State Univ, Inst Fis Teor, UNESP, BR-01405900 São Paulo, Brazil||-|
|dc.relation.ispartof||Physical Review A||-|
|Appears in Collections:||Artigos, TCCs, Teses e Dissertações da Unesp|
There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.