Efimov effect from functional renormalization

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dc.creatorMoroz, S.
dc.creatorFloerchinger, S.
dc.creatorSchmidt, R.
dc.creatorWetterich, C.
dc.date2008-12-02
dc.date2009-04-14
dc.date.accessioned2026-07-07T13:03:09Z
dc.date.available2026-07-07T13:03:09Z
dc.descriptionWe apply a field-theoretic functional renormalization group technique to the few-body (vacuum) physics of non-relativistic atoms near a Feshbach resonance. Three systems are considered: one-component bosons with U(1) symmetry, two-component fermions with U(1)\times SU(2) symmetry and three-component fermions with U(1) \times SU(3) symmetry. We focus on the scale invariant unitarity limit for infinite scattering length. The exact solution for the two-body sector is consistent with the unitary fixed point behavior for all considered systems. Nevertheless, the numerical three-body solution in the s-wave sector develops a limit cycle scaling in case of U(1) bosons and SU(3) fermions. The Efimov parameter for the one-component bosons and the three-component fermions is found to be approximately s=1.006, consistent with the result of Efimov.
dc.description21 pages, 6 figures, minor changes, published version
dc.identifierhttps://arxiv.org/abs/0812.0528
dc.identifierhttp://arxiv.org/abs/0812.0528
dc.identifierPhys. Rev. A 79, 042705 (2009)
dc.identifierdoi:10.1103/PhysRevA.79.042705
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/226695
dc.subjectStatistical Mechanics
dc.subjectNuclear Theory
dc.titleEfimov effect from functional renormalization
dc.typetext

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