Cosmology, Particle Physics and Superfluid 3He

Details Cosmology, Particle Physics and Superfluid 3He Cosmology, Particle Physics and Superfluid 3He

1996-07-30

arxiv.org/abs/cond-mat/9607212v1

Czech.J.Phys.46:3048,1996

Physics

Condensed Matter

Invited talk at LT-21 Conference, 20 pages, 3 figures available at request, compressed ps file of the camera-ready format with

Scientific paper

10.1007/BF02548109

Many direct parallels connect superfluid 3He with the field theories describing the physical vacuum, gauge fields and elementary fermions. Superfluid $^3$He exhibits a variety of topological defects which can be detected with single-defect sensitivity. Modern scenarios of defect-mediated baryogenesis can be simulated by the interaction of the 3He vortices and domain walls with fermionic quasiparticles. Formation of defects in a symmetry-breaking phase transition in the early Universe, which could be responsible for large-scale structure formation and for microwave-background anisotropy, also may be modelled in the laboratory. This is supported by the recent observation of vortex formation in neutron-irradiated 3He-B where the "primordial fireball" is formed in an exothermic nuclear reaction.

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