Non-Linear derivative interactions in relativistic hadrodynamics

Details Non-Linear derivative interactions in relativistic hadrodynamics Non-Linear derivative interactions in relativistic hadrodynamics

2009-04-07

arxiv.org/abs/0904.1130v2

Nucl.Phys.A828:9-28,2009

Physics

Nuclear Physics

Nuclear Theory

Typos corrected, extended discussion and references. To appear in Nuclear Physics A

Scientific paper

10.1016/j.nuclphysa.2009.06.019

The Lagrangian density of Relativistic Hadrodynamics (RHD) is extended by introducing non-linear derivative (NLD) interactions of the nucleon with the meson fields. As a consequence, the nucleon selfenergy becomes both momentum and density dependent. With a single cut-off parameter, which regulates the NLD Lagrangian, our approach is compatible with results from microscopic nuclear matter calculations as well as with Dirac phenomenology. It also reproduces the correct behavior of the real part of the proton-nucleus potential both at low and at high proton energies.

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