Non-perturbative renormalization group equations and approximate discrete gamma_5-symmetry in quantum hadrodynamics

Details Non-perturbative renormalization group equations and approximate discrete gamma_5-symmetry in quantum hadrodynamics Non-perturbative renormalization group equations and approximate discrete gamma_5-symmetry in quantum hadrodynamics

1998-08-20

arxiv.org/abs/nucl-th/9808058v1

Physics

Nuclear Physics

Nuclear Theory

47pages, including 1 table and 27 ps-figures

Scientific paper

The quantum hadrodynamics are studied by using non-perturbative renormalization group equations. Approximate discrete gamma_5-symmetry is studied. It is shown that the contributions of one-loop diagrams are important for effective potential. A relation between the local-potential approximation and the usual Hartree approximation is discussed. The local-potential approximation includes contribution of the Fock term to nucleon self-energy, contribution in the usual random phase approximation to meson self-energy and vertex corrections in part as well as the Hartree contribution to the effective potential. Approximate discrete gamma_5-symmetry is studied phenomenologically in the Hartree approximation. This approximate symmetry may exist in nuclear matter.

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