Abstract
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 language | English |
|---|---|
| Article number | 30004 |
| Journal | EPL |
| Volume | 107 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 2014 Aug 1 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Physics and Astronomy(all)
Cite this
Coleman-Weinberg mechanism in spinor Bose-Einstein condensates. / Uchino, Shun.
In: EPL, Vol. 107, No. 3, 30004, 01.08.2014.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Coleman-Weinberg mechanism in spinor Bose-Einstein condensates
AU - Uchino, Shun
PY - 2014/8/1
Y1 - 2014/8/1
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=84905841490&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84905841490&partnerID=8YFLogxK
U2 - 10.1209/0295-5075/107/30004
DO - 10.1209/0295-5075/107/30004
M3 - Article
VL - 107
JO - EPL
JF - EPL
SN - 0295-5075
IS - 3
M1 - 30004
ER -