Double universality of a quantum phase transition in spinor condensates: modification of the Kibble-Żurek mechanism by a conservation law

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 domai...

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Bibliographic Details
Published inPhysical review letters Vol. 110; no. 4; p. 045303
Main Authors Świsłocki, Tomasz, Witkowska, Emilia, Dziarmaga, Jacek, Matuszewski, Michał
Format Journal Article
LanguageEnglish
Published United States 24.01.2013
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Summary: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.
ISSN:1079-7114
DOI:10.1103/physrevlett.110.045303