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dc.contributor.authorNatti, P. L.-
dc.contributor.authorDe Toledo Piza, A. F. R.-
dc.identifier.citationPhysical Review D - Particles, Fields, Gravitation and Cosmology, v. 54, n. 12, p. 7867-7878, 1996.-
dc.description.abstractA time-dependent projection technique is used to treat the initial-value problem for self-interacting fermionic fields. On the basis of the general dynamics of the fields, we derive formal equations of kinetic-type for the set of one-body dynamical variables. A nonperturbative mean-field expansion can be written for these equations. We treat this expansion in lowest order, which corresponds to the Gaussian mean-field approximation, for a uniform system described by the chiral Gross-Neveu Hamiltonian. Standard stationary features of the model, such as dynamical mass generation due to chiral symmetry breaking and a phenomenon analogous to dimensional transmutation, are reobtained in this context. The mean-field time evolution of nonequilibrium initial states is discussed.en
dc.titleInitial-condition problem for a chiral Gross-Neveu systemen
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)-
dc.contributor.institutionUniversidade de São Paulo (USP)-
dc.contributor.institutionUniversidade Estadual de Londrina (UEL)-
dc.description.affiliationInst. de Fis. Teórica Universidade Estadual Paulista, Rua Pamplona, 145-01405-900 Sao Paulo, Sao Paulo-
dc.description.affiliationInstituto de Física Universidade de São Paulo, C.P. 66318, 05389-970 Sao Paulo, Sao Paulo-
dc.description.affiliationDepartamento de Fisica Universidade Estadual de Londrina, Paraná-
dc.description.affiliationUnespInst. de Fis. Teórica Universidade Estadual Paulista, Rua Pamplona, 145-01405-900 Sao Paulo, Sao Paulo-
dc.rights.accessRightsAcesso aberto-
dc.relation.ispartofPhysical Review D: Particles, Fields, Gravitation and Cosmology-
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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