Composite defect extends analogy between cosmology and 3He |
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Authors: | Eltsov Kibble Krusius Ruutu Volovik |
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Institution: | 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. |
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Abstract: | 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. |
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