Bright solitons and soliton trains in a fermion-fermion mixture
- 57 Downloads
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.
PACS.03.75.Ss Degenerate Fermi gases 05.45.Yv Solitons
Unable to display preview. Download preview PDF.
- P.K. Biswas, S.K. Adhikari, J. Phys. B 33, 1575 (2000); P.K. Biswas, S.K. Adhikari, J. Phys. B 31, L315 (1998); L. Tomio, S.K. Adhikari, Phys. Rev. C 22, 28 (1980); S.K. Adhikari, A. Ghosh, J. Phys. A 30, 6553 (1997); S.K. Adhikari, Phys. Rev. C 19, 1729 (1979); I.H. Sloan, S.K. Adhikari, Nucl. Phys. A 235, 352 (1974) CrossRefADSGoogle Scholar
- S.K. Adhikari, J. Low Temp. Phys. (in press); S.K. Adhikari,\(\,\)Laser\(\,\)Phys.\(\,\)Lett.\(\,\)DOI:\(\,\) 10.1002/lapl.200610050 Google Scholar