Otro
Bright solitons and soliton trains in a fermion-fermion mixture
Registro en:
European Physical Journal D. New York: Springer, v. 40, n. 2, p. 157-160, 2006.
1434-6060
10.1140/epjd/e2006-00203-3
WOS:000241111300001
Autor
Adhikari, S. K.
Resumen
We use a time-dependent dynamical mean-field-hydrodynamic model to predict and study bright solitons in a degenerate fermion-fermion mixture in a quasi-one-dimensional cigar-shaped geometry using variational and numerical methods. Due to a strong Pauli-blocking repulsion among identical spin-polarized fermions at short distances there cannot be bright solitons for repulsive interspecies fermion-fermion interactions. However, stable bright solitons can be formed for a sufficiently attractive interspecies interaction. We perform a numerical stability analysis of these solitons and also demonstrate the formation of soliton trains. These fermionic solitons can be formed and studied in laboratory with present technology.