Aspects of the Gribov problem in Euclidean Yang-Mills theories

• Ano de defesa: 2016
• Autor(a) principal: Justo, Igor Figueiredo
• Tipo de documento: Tese
• Tipo de acesso: Acesso aberto
• Idioma: eng
• Instituição de defesa: Universidade do Estado do Rio de Janeiro; Centro de Tecnologia e Ciências::Instituto de Física Armando Dias Tavares; Brasil; UERJ; Programa de Pós-Graduação em Física
• Palavras-chave em Português: Quantum field theory; Gauge fields (Physics); Confinement (Nuclear physics); Gribov problem; Gauge theory; Teoria quântica de campos (Física); Campos de calibre (Física); Confinamento (Física nuclear); Gribov, V. N. (Vladimir N.); Teoria de campos; Problema de Gribov; Teoria de calibre; CIENCIAS EXATAS E DA TERRA::FISICA::FISICA DAS PARTICULAS ELEMENTARES E CAMPOS::TEORIA GERAL DE PARTICULAS E CAMPOS
• Link de acesso: http://www.bdtd.uerj.br/handle/1/16735

The present thesis is devoted to the study of aspects of the Gribov problem in Euclidean Yang-Mills theories coupled to matter fields. We present some formal (mathematical and phy sical) evidences that point to a similar dynamic behavior of the matter field in comparison with the gauge field in regimes of sufficiently low energy (i.e. the infrared regime). In other words, we claim that an effect of the Gribov problem in the gauge sector is refleted in the matter sector, by means of an unknown mechanism. Such reflection is treated as a non-local term in the matter sector, similar to the non-local Gribov horizon term for the gluons, which seems to account for non-perturbative aspects of the matter field at infrared regime.