Vortex Quantum Creation and Winding Number Scaling in a Quenched Spinor Bose Gas

Michael Uhlmann, Ralf Schützhold, and Uwe R. Fischer
Phys. Rev. Lett. 99, 120407 – Published 18 September 2007


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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  • Received 3 April 2007


©2007 American Physical Society

Authors & Affiliations

Michael Uhlmann1, Ralf Schützhold1, and Uwe R. Fischer2

  • 1Institut für Theoretische Physik, Technische Universität Dresden, D-01062 Dresden, Germany
  • 2Eberhard-Karls-Universität Tübingen, Institut für Theoretische Physik, Auf der Morgenstelle 14, D-72076 Tübingen, Germany

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Vol. 99, Iss. 12 — 21 September 2007

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