Physics – Condensed Matter – Statistical Mechanics
Scientific paper
2010-01-05
Physics
Condensed Matter
Statistical Mechanics
Scientific paper
We show that an atomic system in a periodically modulated optical trap displays an ideal mean-field symmetry-breaking transition. The symmetry is broken with respect to time translation by the modulation period. The transition is due to the interplay of the long-range interatomic interaction and nonequilibrium fluctuations. The observed critical dynamics, including anomalous fluctuations in the symmetry broken phase, are fully described by the proposed microscopic theory.
Dykman Mark I.
Heo Myoung-Sun
Jhe Wonho
Kim Kihwan
Kim Yonghee
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