Low-energy meson spectrum from a QCD approach based on many-body methods

  title={Low-energy meson spectrum from a QCD approach based on many-body methods},
  author={D. A. Amor-Quiroz and Tochtli Y'epez-Mart'inez and Peter Otto Hess and Osvaldo Civitarese and Axel Weber},
  journal={International Journal of Modern Physics E-nuclear Physics},
The Tamm–Dancoff Approximation (TDA) and Random Phase Approximation (RPA) many-body methods are applied to an effective Quantum Chromodynamics (QCD) Hamiltonian in the Coulomb gauge. The gluon effects in the low-energy domain are accounted for by the Instantaneous color-Coulomb Interaction between color-charge densities, approximated by the sum of a Coulomb (α/r) and a confining linear (βr) potential. We use the eigenfunctions of the harmonic oscillator as a basis for the quantization of the… 
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