Publicação: Bethe-Salpeter bound-state structure in Minkowski space
Carregando...
Arquivos
Data
Orientador
Coorientador
Pós-graduação
Curso de graduação
Título da Revista
ISSN da Revista
Título de Volume
Editor
Elsevier B.V.
Tipo
Artigo
Direito de acesso
Acesso aberto
Resumo
The quantitative investigation of the scalar Bethe-Salpeter equation in Minkowski space, within the ladder-approximation framework, is extended to include the excited states. This study has been carried out for an interacting system composed by two massive bosons exchanging a massive scalar, by adopting (i) the Nakanishi integral representation of the Bethe-Salpeter amplitude, and (ii) the formally exact projection onto the null plane. Our analysis, on one hand, confirms the reliability of the method already applied to the ground state and, on the other one, extends the investigation from the valence distribution in momentum space to the corresponding quantity in the impact-parameter space, pointing out some relevant features, like (i) the equivalence between Minkowski and Euclidean transverse-momentum amplitudes, and (ii) the leading exponential fall-off of the valence wave function in the impact-parameter space. (C) 2016 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license.
Descrição
Palavras-chave
Bethe-Salpeter, Minkowski-space, Bound states, Light-front, Impact-parameter
Idioma
Inglês
Como citar
Physics Letters B. Amsterdam: Elsevier Science Bv, v. 759, p. 131-137, 2016.
