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arXiv · 1603.08745

Instantaneous Bethe-Salpeter Kernel for the Lightest Pseudoscalar Mesons

Wolfgang Lucha·Franz F. Schöberl
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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.

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Wolfgang Lucha, Franz F. Schöberl. 2016-03-29. Instantaneous Bethe-Salpeter Kernel for the Lightest Pseudoscalar Mesons. https://doi.org/10.1103/physrevd.93.096005

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