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Confinamento quântico no modelo de duas cadeias acopladas de férmions sem spin

Tese (doutorado)—Universidade de Brasília, Instituto e Física, 2012. / Submitted by Alaíde Gonçalves dos Santos (alaide@unb.br) on 2013-03-14T14:36:16Z
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2012_ThiagoPrudenciodeOliveira.pdf: 2038461 bytes, checksum: 0c4f2153118ec2ef3b7bd4143f6fc798 (MD5) / Realizamos um estudo completo baseado no grupo de renormalização (RG) de duas cadeias de Luttinger acopladas (MDCA) de férmions sem spin sob interações do tipo intrabanda frontal e interbanda frontal, backscattering e umklapp até a ordem de 2-loops. Demonstramos a presença do confinamento quântico nos pontos de Fermi, com os acoplamentos fluindo para os pontos fixos de um líquido de Luttinger. _______________________________________________________________________________________ ABSTRACT / We perform a field theory renormalization group (RG) calculation for two coupled chains model (TCCM) of spinless fermions in the presence of intraband forward, interband forward, backscattering and umklapp interactions up to two-loops. We demonstrate the presence of quantum confinement of the renormalized Fermi points with the renormalized couplings flowing towards the single chain Luttinger liquid fixed points.

Identiferoai:union.ndltd.org:IBICT/oai:repositorio.unb.br:10482/12531
Date12 1900
CreatorsOliveira, Thiago Prudêncio de
ContributorsFerraz Filho, Álvaro
Source SetsIBICT Brazilian ETDs
LanguagePortuguese
Detected LanguagePortuguese
Typeinfo:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/doctoralThesis
Sourcereponame:Repositório Institucional da UnB, instname:Universidade de Brasília, instacron:UNB
Rightsinfo:eu-repo/semantics/openAccess

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