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Updated: Jul 11, 2026

Scanning SQUID Study of Vortex Manipulation by Local Contact
Published on: February 1, 2017
Vortex quantum creation and winding number scaling in a quenched spinor Bose gas
Michael Uhlmann1, Ralf Schützhold, Uwe R Fischer
1Institut für Theoretische Physik, Technische Universität Dresden, D-01062 Dresden, Germany.
Abstract:
Motivated by a recent experiment, we study nonequilibrium quantum phenomena taking place in the quench of a spinor Bose-Einstein condensate through the zero-temperature phase transition separating the polar paramagnetic and planar ferromagnetic phases. We derive the typical spin domain structure (correlations of the effective magnetization) created by the quench arising due to spin-mode quantum fluctuations, and we establish a sample-size scaling law for the creation of spin vortices, which are topological defects in the transverse magnetization.
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