Continuum resonances with shielded Coulomb-like potential and Efimov effect

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dc.contributor.authorTusnski, D. S. [UNESP]
dc.contributor.authorYamashita, Marcelo Takeshi [UNESP]
dc.contributor.authorFrederico, T.
dc.contributor.authorTomio, L. [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionInstituto Tecnológico de Aeronáutica (ITA)
dc.contributor.institutionUniversidade Federal do ABC (UFABC)
dc.date.accessioned2014-12-03T13:11:19Z
dc.date.available2014-12-03T13:11:19Z
dc.date.issued2014-04-01
dc.description.abstractMotivated by the possibility of the second energy level (0 (2) (+) ) of C-12 (in a three-alpha model) to turn into an Efimov state, we study a simple non-realistic toy model formed by three bosons interacting by the phenomenological s-wave Ali-Bodmer potential plus a Coulomb interaction. An artificial three-body potential was used to create a resonance with energy close to the energy of the 0 (2) (+) of C-12, 0.38 MeV. The strength of the Coulomb potential is decreased until the energies of the two alpha pairs are zero. The system was placed inside a harmonic trap and a stabilization method has been used to calculate the energies of the resonances. We found that the shielded-Coulomb potential, which keeps the long tail, is not able to produce the Efimov effect. The energy of the three alphas decreases only to 0.19 MeV when the two-body energy crosses the threshold to become bound.en
dc.description.affiliationUNESP Univ Estadual Paulista, Inst Fis Teor, Sao Paulo, Brazil
dc.description.affiliationInst Tecnol Aeronaut DCTA, Sao Jose Dos Campos, Brazil
dc.description.affiliationUniv Fed ABC, Santo Andre, Brazil
dc.description.affiliationUnespUNESP Univ Estadual Paulista, Inst Fis Teor, Sao Paulo, Brazil
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.format.extent504-508
dc.identifierhttp://dx.doi.org/10.1134/S1063778814040152
dc.identifier.citationPhysics Of Atomic Nuclei. New York: Maik Nauka/interperiodica/springer, v. 77, n. 4, p. 504-508, 2014.
dc.identifier.doi10.1134/S1063778814040152
dc.identifier.fileWOS000335316000012.pdf
dc.identifier.issn1063-7788
dc.identifier.lattes3740639726545315
dc.identifier.urihttp://hdl.handle.net/11449/113023
dc.identifier.wosWOS:000335316000012
dc.language.isoeng
dc.publisherSpringer
dc.relation.ispartofPhysics of Atomic Nuclei
dc.relation.ispartofjcr0.524
dc.relation.ispartofsjr0,327
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.titleContinuum resonances with shielded Coulomb-like potential and Efimov effecten
dc.typeArtigo
dcterms.licensehttp://www.springer.com/open+access/authors+rights?SGWID=0-176704-12-683201-0
dcterms.rightsHolderSpringer
unesp.author.lattes3740639726545315
unesp.author.orcid0000-0002-2559-092X[2]
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Física Teórica (IFT), São Paulopt

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