Hydrodynamics of3He-B
- 28 January 1976
- journal article
- Published by IOP Publishing in Journal of Physics C: Solid State Physics
- Vol. 9 (2) , 279-290
- https://doi.org/10.1088/0022-3719/9/2/014
Abstract
The linearized hydrodynamic theory of 3He-B is derived from thermodynamics by symmetry arguments alone. Spin waves are obtained as Goldstone modes of the broken spin-orbit symmetry. Their spectrum omega (k) is analysed and found to be isotropic, phonon-like with a damping approximately k2. Effects of the weak magnetic dipole interaction and an applied external magnetic field are calculated. The former leads to a mixing of one transverse mode and the longitudinal mode and a gap in the spectrum of one of the Goldstone modes which is the large longitudinal NMR shift characteristic of 3He-B.Keywords
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