Pseudomecânica: partículas de spins inteiros, semi-inteiros e fracionários

• Ano de defesa: 2007
• Autor(a) principal: Pazetti, M [UNESP]
• Tipo de documento: Tese
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Estadual Paulista (Unesp)
• Palavras-chave em Português: Teoria de campos (Física); Field theory (Physics)
• Link de acesso: http://hdl.handle.net/11449/138357; http://www.athena.biblioteca.unesp.br/exlibris/bd/cathedra/11-04-2016/000855588.pdf

We use the pseudomechanics to study non relativistic particles and massive and massless relativistic particles, all of them with spin. In this last case massless, we have two situations: in the first one, we built an invariant action of reparametrization, local transformations of SUSI and O(N) transformations. After the quantization, for the special case N=2, we obtain an action that describes both sectors of massless DKP theory. In a second situation, the action, which is constructed to be invariant under SUSY transformations and 'gama'-reparametrizations even when an interaction field is including, was obtained by including twistor variables. The commutation relations for these variables show that the particle states have fractional statistics and spin. Furthermore, we introduced a possible massive term for the non-interacting model. In all of these cases, the method of Dirac for constraint systems was used