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Podolsky propagator in the gap and bound-state equations

Ramos Zambrano, Germán Enrique Y El-Bennich, Bruno Y Rojas, Eduardo (2021) Podolsky propagator in the gap and bound-state equations. Physical Review D, 103 (7). 076008-1-076008-11. ISSN 1550-7998

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Based on the generalized quantum electrodynamics expression for the Podolsky propagator, which preserves gauge invariance for massive photons, we propose a model for the massive gluon propagator that reproduces well-known features of established strong-interaction models in the framework of the Dyson-Schwinger equation. By adjusting the Podolsky mass and the coupling strength we thus construct a model with simple analytical properties known from perturbative theory, yet well suited to describe a confining interaction. We obtain solutions of the Dyson-Schwinger equation for the quark at spacelike momenta on the real axis as well as on the complex plane and solving the bound-state problem with the Bethe-Salpeter equation yields masses and weak decay constants of the π, K and η c in excellent agreement with experimental values, while the D and D s are reasonably well described. The analytical simplicity of this effective interaction has the potential to be useful for phenomenological applications and may facilitate calculations in Minkowski space.

Tipo de Elemento: Artículo
Asunto: Q Ciencias > QC Physics
Division: Facultad de Ciencias Exactas y Naturales > Programa de Física > Productividad
Depósito de Usuario: Prof. Germán Enrrique /G. E. Ramos Zambrano
Fecha Deposito: 10 Dec 2021 15:52
Ultima Modificación: 10 Dec 2021 15:52

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