Artigo
Black soliton in a quasi-one-dimensional trapped fermion-fermion mixture
Date
2006-12-01Registration in:
Laser Physics Letters. Malden: Wiley-blackwell, v. 3, n. 12, p. 605-611, 2006.
1612-2011
10.1002/lapl.200610050
WOS:000242866400008
8031087349809439
Author
Universidade Estadual Paulista (Unesp)
Abstract
Employing a time dependent mean-field-hydrodynamic model we study the generation of black solitons in a degenerate fermion-fermion mixture in a cigar-shaped geometry using variational and numerical solutions. The black soliton is found to be the first stationary vibrational excitation of the system and is considered to be a nonlinear continuation of the vibrational excitation of the harmonic oscillator state. We illustrate the stationary nature of the black soliton, by studying different perturbations on it after its formation.