The Cosmological Kibble Mechanism in the Laboratory: String Formation in Liquid Crystals
Abstract
Description
I report on the observation of the production of strings (disclination lines and loops) via the Kibble mechanism of domain (bubble) formation in the isotropic to nematic phase transition of a sample of uniaxial nematic liquid crystal. The probablity of string formation per bubble is measured to be $0.33 \pm 0.01$. This is in good agreement with the theoretical value $1/ π$ expected in two dimensions for the order parameter space $S^2/{\bf Z}_2$ of a simple uniaxial nematic liquid crystal. ( NB: The only change is a correction of the preprint number for proper referencing and the title page.)
11 pages , Harvmac, SUHEP-4241-518, plus two figures not included
11 pages , Harvmac, SUHEP-4241-518, plus two figures not included