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

الأصل · EN

At a very rapid superfluid transition in ³He, 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 ³He 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.