Parametric Resonance Phenomena in Bose-Einstein Condensates: Breaking of Macroscopic Quantum Self-Trapping

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dc.creatorSalasnich, Luca
dc.date2002-08-12
dc.date.accessioned2026-07-07T02:46:49Z
dc.date.available2026-07-07T02:46:49Z
dc.descriptionWe analyze the periodic tunneling of a Bose-Einstein condensate in a double-well potential which has an oscillating energy barrier. We show that the dynamics of the Bose condensate critically depends on the frequency $ω$ of the oscillating energy barrier. In the regime of periodic macroscopic quantum tunneling (PMQT) with frequency $ω_J$, the population imbalance of the condensate in the two wells can be enhanced under the condition of parametric resonance $ω= 2 ω_J$. Instead, in the regime of macroscopic quantum self-trapping (MQST), we find that MQST can be reduced or suppressed under the condition of parametric resonance between the frequency $ω$ of the energy barrier and the frequency $ω_{ST}$ of oscillation through the barrier of the very small fraction of particles which remain untrapped during MQST.
dc.description9 pages, 3 figures, prepared for the 'Laser Physics Workshop 2000', seminar on 'Bose-Einstein Condensation of Trapped Atoms', Bratislava, to be published in Laser Physics
dc.identifierhttps://arxiv.org/abs/cond-mat/0208221
dc.identifierhttp://arxiv.org/abs/cond-mat/0208221
dc.identifierLaser Physics, vol. 13, 547-550 (2003)
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/19774
dc.subjectStatistical Mechanics
dc.titleParametric Resonance Phenomena in Bose-Einstein Condensates: Breaking of Macroscopic Quantum Self-Trapping
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