Radiatively Induced Non Linearity in the Walecka Model

Details Radiatively Induced Non Linearity in the Walecka Model Radiatively Induced Non Linearity in the Walecka Model

2010-05-25

arxiv.org/abs/1005.4533v1

Physics

Nuclear Physics

Nuclear Theory

13 pages, 6 figures

Scientific paper

We evaluate the effective potential for the conventional linear Walecka non perturbatively up to one loop. This quantity is then renormalized with a prescription which allows finite vacuum contributions to the three as well as four 1PI Green's functions to survive. These terms, which are absent in the standard relativistic Hartree approximation, have a logarithmic energy scale dependence that can be tuned so as to mimic the effects of phi3 and phi4 type of terms present in the non linear Walecka model improving quantities such as the compressibility modulus and the effective nucleon mass, at saturation, by considering energy scales which are very close to the nucleon mass at vanishing density.

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