Relativistic Bose-Einstein condensation with disorder

dc.contributor.authorArias, E.
dc.contributor.authorKrein, G. [UNESP]
dc.contributor.authorMenezes, G.
dc.contributor.authorSvaiter, N. F.
dc.contributor.institutionUniversidade do Estado do Rio de Janeiro (UERJ)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniv Fed Rural Rio De Janeiro
dc.contributor.institutionCtr Brasileiro Pesquisas Fis
dc.date.accessioned2018-11-26T16:18:55Z
dc.date.available2018-11-26T16:18:55Z
dc.date.issued2015-12-11
dc.description.abstractWe investigate the thermodynamics of a self-interacting relativistic charged scalar field in the presence of weak disorder. We consider quenched disorder which couples linearly to the mass of the scalar field. After performing noise averages over the free energy of the system, we find that disorder increases the mean-field critical temperature for Bose-Einstein condensation at finite density in the ultrarelativistic limit. In turn, preliminary non-relativistic calculations indicate that the presence of randomness affects the Bose gas in the opposite way in such a limit, i.e. disorder reduces the mean-field condensation temperature. The effect of disorder on the temperature dependence of the chemical potential for a fixed charge density is investigated. Significant differences from the mean-field temperature dependence of the chemical potential are observed as the strength of the noise intensity increases. Finally, the temperature dependence of the chemical potential with fixed total charge and entropy is investigated. It is found that there is no Bose-Einstein condensation for a fixed charge to entropy ratio in the presence of weak disorder. The possible relevance of the findings in the present paper in different areas is discussed.en
dc.description.affiliationUniv Estado Rio De Janeiro, Inst Politecn, BR-28625570 Nova Friburgo, RJ, Brazil
dc.description.affiliationUniv Estadual Paulista, Inst Fis Teor, BR-01140070 Sao Paulo, SP, Brazil
dc.description.affiliationUniv Fed Rural Rio De Janeiro, Dept Fis, Grp Fis Teor & Matemat Fis, BR-23897000 Seropedica, RJ, Brazil
dc.description.affiliationCtr Brasileiro Pesquisas Fis, BR-22299018 Rio De Janeiro, RJ, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Inst Fis Teor, BR-01140070 Sao Paulo, SP, Brazil
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado do Rio de Janeiro (FAPERJ)
dc.description.sponsorshipIdCNPq: 305894/2009-9
dc.description.sponsorshipIdCNPq: 303629/2011-8
dc.description.sponsorshipIdFAPESP: 2013/01907-0
dc.format.extent27
dc.identifierhttp://dx.doi.org/10.1088/1751-8113/48/49/495002
dc.identifier.citationJournal Of Physics A-mathematical And Theoretical. Bristol: Iop Publishing Ltd, v. 48, n. 49, 27 p., 2015.
dc.identifier.doi10.1088/1751-8113/48/49/495002
dc.identifier.fileWOS000366414100005.pdf
dc.identifier.issn1751-8113
dc.identifier.urihttp://hdl.handle.net/11449/161043
dc.identifier.wosWOS:000366414100005
dc.language.isoeng
dc.publisherIop Publishing Ltd
dc.relation.ispartofJournal Of Physics A-mathematical And Theoretical
dc.relation.ispartofsjr0,843
dc.rights.accessRightsAcesso aberto
dc.sourceWeb of Science
dc.subjectBose-Einstein condensation
dc.subjectphase transitions
dc.subjectwave propagation in random media
dc.subjectfinite temperature field theory
dc.titleRelativistic Bose-Einstein condensation with disorderen
dc.typeArtigo
dcterms.licensehttp://iopscience.iop.org/page/copyright
dcterms.rightsHolderIop Publishing Ltd

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