Fermionic bright soliton in a boson-fermion mixture
Abstract
We use a time-dependent dynamical mean-field-hydrodynamic model to study the formation of fermionic bright solitons in a trapped degenerate Fermi gas mixed with a Bose-Einstein condensate in a quasi-one-dimensional cigar-shaped geometry. Due to a strong Pauli-blocking repulsion among spin-polarized fermions at short distances there cannot be bright fermionic solitons in the case of repulsive boson-fermion interactions. However, we demonstrate that stable bright fermionic solitons can be formed for a sufficiently attractive boson-fermion interaction in a boson-fermion mixture. We also consider the formation of fermionic solitons in the presence of a periodic axial optical-lattice potential. These solitons can be formed and studied in the laboratory with present technology.
Keywords
Cite
@article{arxiv.cond-mat/0509257,
title = {Fermionic bright soliton in a boson-fermion mixture},
author = {Sadhan K. Adhikari},
journal= {arXiv preprint arXiv:cond-mat/0509257},
year = {2009}
}
Comments
7 pages, 7 ps figures