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Phonons in magnon superfluid and symmetry breaking field

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arxiv 0804.3709 v3 pith:QTR4M4RJ submitted 2008-04-23 cond-mat.other cond-mat.stat-mechhep-ph

Phonons in magnon superfluid and symmetry breaking field

classification cond-mat.other cond-mat.stat-mechhep-ph
keywords fieldbreakinggoldstonemagnonspectrumsuperfluidsymmetrybose-einstein
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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Recent experiments [1],[2] which measured the spectrum of the Goldstone collective mode of coherently precessing state in 3He-B are discussed using the presentation of the coherent spin precession in terms of the Bose-Einstein condensation of magnons. The mass in the spectrum of the Goldstone boson -- phonon in the superfluid magnon liquid -- is induced by the symmetry breaking field, which is played by the RF magnetic field

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