Instantaneous Bethe-Salpeter Kernel for the Lightest Pseudoscalar Mesons
High Energy Physics - Phenomenology
2016-05-06 v1 Nuclear Theory
Abstract
Starting from a phenomenologically successful, numerical solution of the Dyson-Schwinger equation that governs the quark propagator, we reconstruct in detail the interaction kernel that has to enter the instantaneous approximation to the Bethe-Salpeter equation to allow us to describe the lightest pseudoscalar mesons as quark-antiquark bound states exhibiting the (almost) masslessness necessary for them to be interpretable as the (pseudo) Goldstone bosons related to the spontaneous chiral symmetry breaking of quantum chromodynamics.
Cite
@article{arxiv.1603.08745,
title = {Instantaneous Bethe-Salpeter Kernel for the Lightest Pseudoscalar Mesons},
author = {Wolfgang Lucha and Franz F. Schöberl},
journal= {arXiv preprint arXiv:1603.08745},
year = {2016}
}
Comments
12 pages, 4 figures