Neutron$-^{19}$C scattering near an Efimov state

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dc.creatorYamashita, M. T.
dc.creatorFrederico, T.
dc.creatorTomio, Lauro
dc.date2008-08-22
dc.date2008-10-08
dc.date.accessioned2026-07-07T12:15:20Z
dc.date.available2026-07-07T12:15:20Z
dc.descriptionThe low-energy neutron$-^{19}$C scattering in a neutron-neutron-core model is studied with large scattering lengths near the conditions for the appearance of an Efimov state. We show that the real part of the elastic $s-$wave phase-shift ($δ_0^R$) presents a zero, or a pole in $ k\cotδ_0^{R}$, when the system has an Efimov excited or virtual state. More precisely the pole scales with the energy of the Efimov state (bound or virtual). We perform calculations in the limit of large scattering lengths, disregarding the interaction range, within a renormalized zero-range approach using subtracted equations. It is also presented a brief discussion of these findings in the context of ultracold atom physics with tunable scattering lengths.
dc.identifierhttps://arxiv.org/abs/0808.3113
dc.identifierhttp://arxiv.org/abs/0808.3113
dc.identifierPhys.Lett.B670:49-54,2008
dc.identifierdoi:10.1016/j.physletb.2008.10.030
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/211468
dc.subjectNuclear Theory
dc.subjectOther Condensed Matter
dc.titleNeutron$-^{19}$C scattering near an Efimov state
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