Excitations and finite-size properties of an integrable supersymmetric electronic model

Página do item simplificado
dc.contributor.authorMalvezzi, André Luiz [UNESP]
dc.contributor.authorMartins, M. J.
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade Federal de São Carlos (UFSCar)
dc.date.accessioned2014-05-20T13:26:25Z
dc.date.available2014-05-20T13:26:25Z
dc.date.issued2010-01-01
dc.description.abstractWe investigate the bulk and finite-size properties of an integrable extension of the Hubbard model with a free parameter gamma related to the quantum deformation of the superalgebra sl (2 vertical bar 2)((2)). The Bethe ansatz solution is used to determine the ground state and the nature of the spin and charge excitations. As gamma -> 0 the charge dispersion relation for low momenta crossover from linear to parabolic foreseeing a change from antiferromagnetic to ferromagnetic behavior. The study of the finite-size corrections to the spectrum reveals us that the underlying conformal theory has central charge c=-1 and a related effective central charge c(ef) = 2 as well as critical exponents depending on the parameter gamma. We note that exact results at the isotropic point gamma=0 can be established without recourse to the Bethe ansatz solution.en
dc.description.affiliationUniv Estadual Paulista, UNESP, Fac Ciencias, Dept Fis, BR-17033360 Bauru, SP, Brazil
dc.description.affiliationUniv Fed Sao Carlos, Dept Fis, BR-13565905 Sao Carlos, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, UNESP, Fac Ciencias, Dept Fis, BR-17033360 Bauru, 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.format.extent8
dc.identifierhttp://dx.doi.org/10.1103/PhysRevB.81.035120
dc.identifier.citationPhysical Review B. College Pk: Amer Physical Soc, v. 81, n. 3, p. 8, 2010.
dc.identifier.doi10.1103/PhysRevB.81.035120
dc.identifier.fileWOS000274002300045.pdf
dc.identifier.issn1098-0121
dc.identifier.lattes4459191234201599
dc.identifier.urihttp://hdl.handle.net/11449/8516
dc.identifier.wosWOS:000274002300045
dc.language.isoeng
dc.publisherAmer Physical Soc
dc.relation.ispartofPhysical Review B
dc.relation.ispartofsjr1,604
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.titleExcitations and finite-size properties of an integrable supersymmetric electronic modelen
dc.typeArtigo
dcterms.licensehttp://publish.aps.org/authors/transfer-of-copyright-agreement
dcterms.rightsHolderAmer Physical Soc
unesp.author.lattes4459191234201599[1]
unesp.author.orcid0000-0002-3195-9551[1]
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Ciências, Baurupt
unesp.departmentFísica - FCpt

Arquivos

Pacote Original
Agora exibindo 1 - 1 de 1
Imagem de Miniatura
Nome:
WOS000274002300045.pdf
Tamanho:
150.93 KB
Formato:
Adobe Portable Document Format
Baixar
Licença do Pacote
Agora exibindo 1 - 2 de 2
Nenhuma Miniatura disponível
Nome:
license.txt
Tamanho:
1.71 KB
Formato:
Item-specific license agreed upon to submission
Descrição:
Nenhuma Miniatura disponível
Nome:
license.txt
Tamanho:
1.71 KB
Formato:
Item-specific license agreed upon to submission
Descrição:

Coleções

Bauru - FC - Faculdade de Ciências