Vórtices no modelo sigma-O(3)-Maxwell-Chern-Simons-Higgs com acoplamento não mínimo

• Ano de defesa: 1996
• Autor(a) principal: Cavalcante, Francisco Sales Ávila
• Orientador(a): Almeida, Carlos Alberto Santos de
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Palavras-chave em Português: Campos de calibre (Física); Teoria de Chern-Simons; Maxwell, Equações de
• Link de acesso: http://www.repositorio.ufc.br/handle/riufc/62309

In this work we consider an O(3) sigma model coupled nonminimally with an Abelian gauge field, whose dynamic is governed both by Maxwell and Chem-Simons terms. If the spontaneous symmetry breaking is taken place, we found that a new Maxwell as well as Chem-Simons term are generated, even with a generic Higgs potential. For a specific choice of this potential and a critical value of the nonminimal coupling constant there are both topological and nontopological self-dual soliton solutions, where the topological ones are considered. In addition, the introduction of a parameter in the Higgs potential allows the existence of asymmetric and symmetric phase. Static solitons of the vortices type satisfying the Bogomol'nyi bound are studied numerically and plotted.