Collective excitations of trapped one-dimensional dipolar quantum gases

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dc.creatorPedri, P.
dc.creatorDe Palo, S.
dc.creatorOrignac, E.
dc.creatorCitro, R.
dc.creatorChiofalo, M. L.
dc.date2007-08-21
dc.date.accessioned2026-07-07T09:40:44Z
dc.date.available2026-07-07T09:40:44Z
dc.descriptionWe calculate the excitation modes of a 1D dipolar quantum gas confined in a harmonic trap with frequency $ω_0$ and predict how the frequency of the breathing n=2 mode characterizes the interaction strength evolving from the Tonks-Girardeau value $ω_2=2ω_0$ to the quasi-ordered, super-strongly interacting value $ω_2=\sqrt{5}ω_0$. Our predictions are obtained within a hydrodynamic Luttinger-Liquid theory after applying the Local Density Approximation to the equation of state for the homogeneous dipolar gas, which are in turn determined from Reptation Quantum Monte Carlo simulations. They are shown to be in quite accurate agreement with the results of a sum-rule approach. These effects can be observed in current experiments, revealing the Luttinger-liquid nature of 1D dipolar Bose gases.
dc.description5 pages, 2 EPS figures, RevTeX 4
dc.identifierhttps://arxiv.org/abs/0708.2789
dc.identifierhttp://arxiv.org/abs/0708.2789
dc.identifierPhys. Rev. A 77, 015601 (2008)
dc.identifierdoi:10.1103/PhysRevA.77.015601
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/161578
dc.subjectOther Condensed Matter
dc.subjectStrongly Correlated Electrons
dc.titleCollective excitations of trapped one-dimensional dipolar quantum gases
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