Ambiguities and symmetry relations associated with fermionic tensor densities
Nenhuma Miniatura disponível
Data
2004-01-01
Autores
Dallabona, G.
Battistel, O. A.
Título da Revista
ISSN da Revista
Título de Volume
Editor
Resumo
We consider the consistent evaluation of perturbative (divergent) Green functions associated with fermionic tensor densities and the derivation of symmetry relations for them. We show that, in spite of current algebra methods being not applicable, it is possible to derive symmetry properties analogous to the Ward identities of vector and axial-vector densities. The proposed method, which is applicable to any previously chosen order of perturbative calculation, gives the same results as those of current algebra when such a tool is applicable. By using a very general calculational strategy, concerning the manipulations and calculations involving divergent Feynman integrals, we evaluate the purely fermionic two-point functions containing tensor vertices and derive their symmetry properties. The present investigation is the first step in the study and characterization of possible anomalies involving fermionic tensor densities, particularly in purely fermionic three-point functions. © 2004 The American Physical Society.
Descrição
Palavras-chave
Como citar
Physical Review D - Particles, Fields, Gravitation and Cosmology, v. 70, n. 6, 2004.