Partition function for a mass dimension one fermionic field and the dark matter halo of galaxies

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dc.contributor.authorPereira, S. H. [UNESP]
dc.contributor.authorCosta, Richard S. [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2019-10-06T16:25:24Z
dc.date.available2019-10-06T16:25:24Z
dc.date.issued2019-01-01
dc.description.abstractThis work studies the finite temperature effects of a mass dimension one fermionic field, sometimes called Elko field. The equilibrium partition function was calculated by means of the imaginary time formalism and the result obtained was the same for a Dirac fermionic field, even though the Elko field does not satisfy a Dirac-like equation. The high and low temperature limits were obtained, and for the last case the degeneracy pressure due to Pauli exclusion principle can be responsible for the dark matter halos around galaxies to be greater than or of the same order of the galaxy radius. Also, for a light particle of about 1.0 eV and a density of just 1 particle per cubic centimeter, the value of the total dark matter mass due to Elko particles is of the same order of a typical galaxy. Such a result satisfactorily explains the dark matter as being formed just by Elko fermionic particles and also the existence of galactic halos that go beyond the observable limit.en
dc.description.affiliationDepartamento de Física e Química Faculdade de Engenharia Guaratinguetá Universidade Estadual Paulista (Unesp), Av. Dr. Ariberto Pereira da Cunha 333
dc.description.affiliationUnespDepartamento de Física e Química Faculdade de Engenharia Guaratinguetá Universidade Estadual Paulista (Unesp), Av. Dr. Ariberto Pereira da Cunha 333
dc.identifierhttp://dx.doi.org/10.1142/S0217732319501268
dc.identifier.citationModern Physics Letters A.
dc.identifier.doi10.1142/S0217732319501268
dc.identifier.issn0217-7323
dc.identifier.scopus2-s2.0-85064223859
dc.identifier.urihttp://hdl.handle.net/11449/188965
dc.language.isoeng
dc.relation.ispartofModern Physics Letters A
dc.rights.accessRightsAcesso restrito
dc.sourceScopus
dc.subjectFinite temperature field theory
dc.subjectmass dimension one fermion
dc.titlePartition function for a mass dimension one fermionic field and the dark matter halo of galaxiesen
dc.typeArtigo

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