The Two-loop Massless λ4!,ϕ4 Model in Non-translational Invariant Domain

Nota de FísicaPublicado

The Two-loop Massless $\frac{\lambda}{4!}\,\varphi^{4}$ Model in Non-translational Invariant Domain

M. Aparicio Alcalde; G. Flores Hidalgo

02/01/2006

Autores: M. Aparicio Alcalde; G. Flores Hidalgo
Tipo: Nota de Física
Status: Publicado
Data de publicação: 02/01/2006
Descrição: We study the $\frac{\lambda}{4!}\varphi^{4}$ massless scalar field theory in a four-dimensional Euclidean space, where all but one of the coordinates are unbounded. We are considering Dirichlet boundary conditions in two hyperplanes, breaking the translation invariance of the system. We show how to implement the perturbative renormalization up to two-loop level of the theory. First, analyzing the full two and four-point functions at the one-loop level, we shown that the bulk counterterms are sufficient to render the theory finite. Meanwhile, at the two-loop level, we have to introduce also surface counterterms in the bare lagrangian in order to make finite the full two and also four-point Schwinger functions.
Ano: 2005
Número: CBPF-NF-024/05
Vínculo com tese: Não
Vínculo com bolsa: Não