Journal of Low Temperature Physics

, Volume 110, Issue 1–2, pp 23–37 | Cite as

Baryon Asymmetry of Universe: View from Superfluid 3He

  • G.E. Volovik


The origin of the excess of matter over antimatter in our Universe remains one of the fundamental problems. Dynamical baryogenesis in the process of the broken symmetry electroweak transition in the expanding Universe is the widely discussed model where the baryonic asymmetry is induced by the quantum chiral anomaly. We discuss the modelling of this phenomenon in superfluid 3 He and superconductors where the chiral anomaly is realized in the presence of quantized vortex, which introduces nodes into the energy spectrum of the fermionic quasiparticles. The spectral flow of fermions through the nodes during the vortex motion leads to the creation of fermionic charge from the superfluid vacuum and to transfer of the superfluid linear momentum into the heat bath, thus producing an extra force on the vortex, which in some cases compensates the Magnus force. This spectral-flow force was calculated 20 years ago by Kopnin and Kravtsov for s-wave superconductors, but only recently was it measured in a broad temperature range in Manchester experiments on rotating superfluid 3 He. The ”momentogenesis” observed in 3 He is analogous to the dynamical production of baryons by cosmic strings. Some other possible scenaria of baryogenesis related to superfluid 3 He are discussed.


Vortex Cosmic String Linear Momentum Heat Bath Vortex Motion 
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Copyright information

© Plenum Publishing Corporation 1998

Authors and Affiliations

  • G.E. Volovik
    • 1
  1. 1.Low Temperature LaboratoryHelsinki University of TechnologyFinland.

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