Collective excitations and instabilities in multi-layer stacks of dipolar condensates

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dc.creatorWang, Daw-Wei
dc.creatorDemler, Eugene
dc.date2008-12-10
dc.date.accessioned2026-07-07T12:11:37Z
dc.date.available2026-07-07T12:11:37Z
dc.descriptionWe analyze theoretically the collective mode dispersion in multi-layer stacks of two dimensional dipolar condensates and find a strong enhancement of the roton instability. We discuss the interplay between the dynamical instability and roton softening for moving condensates. We use our results to analyze the decoherence rate of Bloch oscillations for systems in which the s-wave scattering length is tuned close to zero using Feshbach resonance. Our results are in qualitative agreement with recent experiments of Fattori {\it et al.} on $^{39}$K atoms.
dc.description5 pages with 3 figures
dc.identifierhttps://arxiv.org/abs/0812.1838
dc.identifierhttp://arxiv.org/abs/0812.1838
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/210273
dc.subjectOther Condensed Matter
dc.subjectSuperconductivity
dc.titleCollective excitations and instabilities in multi-layer stacks of dipolar condensates
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