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``Cosmological'' scenario for A-B phase transition in superfluid 3He

Yu. M. Bunkov·O. D. Timofeevskaya
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Abstract

At a very rapid superfluid transition in $^3$He, follows after a reaction with single neutron, the creation of topological defects (vortices) has recently been demonstrated in accordance with the Kibble-Zurek scenario for the cosmological analogue. We discuss here the extension of the Kibble-Zurek scenario to the case when alternative symmetries may be broken and different states nucleated independently. We have calculated the nucleation probability of the various states of superfluid $^3$He during a superfluid transition. Our results can explain the transition from supercooled $A$ phase to the $B$ phase, triggered by nuclear reaction. The new scenario is an alternative to the well-known ``baked Alaska'' scenario.

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Yu. M. Bunkov, O. D. Timofeevskaya. 1997-06-01. ``Cosmological'' scenario for A-B phase transition in superfluid 3He. https://doi.org/10.1103/physrevlett.80.4927

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