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-The contributions of vacuum fluctuations to energy density in a weak momen-tum dependence of self-energy are calculated in Walecka model.After adjusting modelparameters and introducing momentum dependent form factors at meson-nucleonvertices to reproduce the empirical nuclear matter saturation properties,Hartree-Fockresults including vacuum effects at low to moderate densities are similar to those in therelativistic Hartree approximation.
-The contributions of vacuum fluctuations to energy density in a weak momen-tum dependence of self-energy are calculated in Walecka model. After adjusting model parameters and aiding momentum dependent form factors at meson-nucleonvertices to reproduce the empirical nuclear matter saturation properties, Hartree- Fockresults including vacuum effects at low to moderate densities are similar to those in therelativistic Hartree approximation.