Coleman-Weinberg mechanism in spinor Bose-Einstein condensates

Shun Uchino*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


It is argued that a continuous quantum phase transition between different ordered phases in spinor Bose-Einstein condensates predicted by the mean-field theory is vulnerable to quantum fluctuations. By analyzing Lee-Huang-Yang corrections in the condensate, we demonstrate that the so-called Coleman-Weinberg mechanism takes place in such a transition, that is, the transition becomes of the first order by quantum fluctuations. A jump to be expected in this first-order transition is induced by a correction from density fluctuations despite a transition between different magnetic properties with keeping condensation. We exemplify this with an experimentally relevant case and show that a measurement of a condensate depletion can be utilized to confirm the first-order transition.

Original languageEnglish
Article number30004
Issue number3
Publication statusPublished - 2014 Aug 1
Externally publishedYes

ASJC Scopus subject areas

  • General Physics and Astronomy


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