Collective Excitations of Harmonically Trapped Ideal Gases

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We theoretically study the collective excitations of an ideal gas confined in an isotropic harmonic trap. We give an exact solution to the Boltzmann-Vlasov equation; as expected for a single-component system, the associated mode frequencies are integer multiples of the trapping frequency. We show that the expressions found by the scaling ansatz method are a special case of our solution. Our findings, however, are most useful in case the trap contains more than one phase: we demonstrate how to obtain the oscillation frequencies in case an interface is present between the ideal gas and a different phase.
4 pages, submitted to special issue of Eur. Phys. J. B "Novel Quantum Phases and Mesoscopic Physics in Quantum Gases"

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Other Condensed Matter, Statistical Mechanics

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http://salesiana.dossiersoluciones.com/handle/123456789/229845

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/0806.4895
 http://arxiv.org/abs/0806.4895
 Eur. Phys. J. B 68, 329 (2009)
 doi:10.1140/epjb/e2008-00420-6

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arXiv