Quantum electrodynamics in the null-plane causal perturbation theory. II.

• Autor(a) principal: Acevedo, O. A. [UNESP]
• Data de Publicação: 2022
• Outros Autores: Pimentel, B. M. [UNESP]
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://dx.doi.org/10.1103/PhysRevD.106.096024; http://hdl.handle.net/11449/247982

We develop a complete formulation of quantum gauge invariance in light-front dynamics for interacting theories with massless vector gauge fields in the framework of null-plane causal perturbation theory. We apply the general results to quantum electrodynamics, showing that the so-called gauge termspresent in the photon commutation distribution when quantized under the null-plane gauge condition have no contribution in the calculation of the physical S-operator matrix elements at any order. We use this result to prove the normalizability of the theory, and to calculate the electron's self-energy at second order.