Composite defect extends analogy between cosmology and 3He
Spin-mass vortices have been observed to form in rotating superfluid 3He-B, following the absorption of a thermal neutron and a rapid transition from the normal to the superfluid state. The spin-mass vortex is a composite defect which consists of a planar soliton (wall) which terminates on a linear core (string). This observation fits well within the framework of a cosmological scenario for defect formation, known as the Kibble-Zurek mechanism. It suggests that in the early Universe analogous cosmological defects might have formed.
Eltsov
VB
Low Temperature Laboratory, Helsinki University of Technology, P.O. Box 2200, FIN-02015 HUT Espoo, Finland and Kapitza Institute for Physical Problems, Kosygina 2, 117334 Moscow, Russia.
Kibble
TW
Krusius
M
Ruutu
VM
Volovik
GE