Double Universality of a Quantum Phase Transition in Spinor Condensates: Modification of the Kibble-Żurek Mechanism by a Conservation Law

Tomasz Świsłocki, Emilia Witkowska, Jacek Dziarmaga, and Michał Matuszewski
Phys. Rev. Lett. 110, 045303 – Published 24 January 2013

Abstract

We consider a phase transition from an antiferromagnetic to a phase separated ground state in a spin-1 Bose-Einstein condensate of ultracold atoms. We demonstrate the occurrence of two scaling laws, for the number of spin domain seeds just after the phase transition, and for the number of spin domains in the final, stable configuration. Only the first scaling can be explained by the standard Kibble-Żurek mechanism. We explain the occurrence of two scaling laws by a model including postselection of spin domains due to the conservation of condensate magnetization.

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  • Received 24 August 2012

DOI:https://doi.org/10.1103/PhysRevLett.110.045303

© 2013 American Physical Society

Authors & Affiliations

Tomasz Świsłocki1, Emilia Witkowska1, Jacek Dziarmaga2, and Michał Matuszewski1

  • 1Instytut Fizyki PAN, Aleja Lotników 32/46, 02-668 Warsaw, Poland
  • 2Instytut Fizyki Uniwersytetu Jagiellońskiego, ul. Reymonta 4, 30-059 Kraków, Poland

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Issue

Vol. 110, Iss. 4 — 25 January 2013

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