Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2005-03-28
Braz.J.Phys. 35 (2005) 190-196
Physics
Nuclear Physics
Nuclear Theory
7 pages, 5 figures
Scientific paper
The Walecka model contains essentially two parameters that are associated with the Lorentz scalar (S) and vector (V) interactions. These parameters are related to a two-body interaction consisting of S and V, imposing the condition that the two-body binding energy is fixed. We have obtained a set of different values for the nuclear matter binding energies at equilibrium densities. We investigated the existence of a linear correlation between $B_N$ and $\rho_0$, claimed to be universal for nonrelativistic systems and usually known as the Coester line, and found an approximate linear correlation only if $V?S$ remains constant. It is shown that the relativistic content of the model, which is related to the strength of $V?S$, is responsible for the shift of the Coester line to the empirical region of nuclear matter saturation.
Delfino A.
Malheiro Manuel
Sa Martins Jorge S.
Timoteo Varese Salvador
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