Abstract
The spin waves in the ferromagnetic spinor Bose gas at temperatures were investigated, when the Bose condensate coexists with significant normal component. It was shown that the ferromagnetism transition takes place always above Bose-Einstein condensation in ferromagnetically coupled spinor Bose gases. The spin-wave stiffness coefficient of the mixed mode, includes contributions from both the two phases, which implies the 'two-fluid' feature of the system. The results show that the spin waves in the two fluids were coupled together to produce only one mixed spin-wave mode in the coexisting state.
| Original language | English |
|---|---|
| Article number | 063609 |
| Pages (from-to) | 063609-1-063609-5 |
| Journal | Physical Review A - Atomic, Molecular, and Optical Physics |
| Volume | 70 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - Dec 2004 |
Bibliographical note
Funding Information:We thank Luis Santos for a critical reading of the manuscript and the Deutsche Forschungsgemeinschaft for support of this work. Q.G. acknowledges helpful discussions with Kurt Scharnberg and Dimo I. Uzunov.
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics