Bose-Einstein condensation of magnons in superfluid 3He
arXiv:0708.0663 · doi:10.1007/s10909-007-9530-7
Abstract
The possibility of Bose-Einstein condensation of excitations has been discussed for a long time. The phenomenon of the phase-coherent precession of magnetization in superfluid 3He and the related effects of spin superfluidity are based on the true Bose-Einstein condensation of magnons. Several different states of coherent precession has been observed in 3He-B: homogeneously precessing domain (HPD); persistent signal formed by Q-balls at very low temperatures; coherent precession with fractional magnetization; and two new modes of the coherent precession in compressed aerogel. In compressed aerogel the coherent precession has been also found in 3He-A. Here we demonstrate that all these cases are examples of a Bose-Einstein condensation of magnons, with the magnon interaction term in the Gross-Pitaevskii equation being provided by different types of spin-orbit coupling in the background of the coherent precession.
10 pages, 5 figures, prepared for proceedings of QFS-2007, JLTP style
References in corpus (9)
- Bose-Einstein Condensation of Excitons in Bilayer Electron Systems
- Cosmological consequences of MSSM flat directions
- Experimental signatures of supersymmetric dark-matter Q-balls
- Bose-Einstein Condensation of Magnons in Cs2CuCl4
- Magnon condensation into Q-ball in 3He-B
- Stable Spin Precession at one Half of Equilibrium Magnetization in Superfluid 3He-B
- Strong orientational effect of stretched aerogel on the 3He order parameter
- Q-ball dynamics from atomic Bose-Einstein condensates
- Superflow-Stabilized Nonlinear NMR in Rotating 3He-B
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