Hydrodynamic modes of H↓
- 1 May 1982
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 25 (9) , 5707-5710
- https://doi.org/10.1103/physrevb.25.5707
Abstract
The normal modes of a nonuniform distribution of H↓ atoms are studied in the hydrodynamic regime. Explicit results for the eigenfrequencies, phase velocities, etc., are obtained under special conditions. The two-fluid equations for a uniform H↓ system are then analyzed to show that below the Bose-Einstein condensation temperature there are two modes involving strongly coupled pressure and temperature oscillations.Keywords
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