Estudos sobre o comportamento de sistemas quânticos no espaço-tempo de Safko-Witten.

• Ano de defesa: 2009
• Autor(a) principal: Mota, Herondy Francisco Santana
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal da Paraí­ba; BR; Física; Programa de Pós-Graduação em Física; UFPB
• Palavras-chave em Português: Espaço-tempo de Safko-Witten; Desvio de fase; Amplitude de espalhamento e energia de ponto zero; CIENCIAS EXATAS E DA TERRA::FISICA
• Link de acesso: https://repositorio.ufpb.br/jspui/handle/tede/5719

In this dissertation we obtain the solution of the Einstein-Maxwell equations due to a tubular matter source with an axial interior magnetic field and a circular exterior magnetic field. This solution is particularized for the case in which the exterior magnetic field vanishes (Safko-Witten spacetime). In this background we find the solution of the Klein-Gordon and Dirac equations and analyse the problem concerning the scattering. In these situations the dependence of these quantities with the conicity of the exterior spacetime and on the geometry of the exterior solution is showed up. We consider a massive scalar field in this background, but not taking into account the internal solution and calculate the ground state energy showing up the dependence of this quantity with the conicity of the geometry exterior spacetime.