LOWEST ORDER CONSTRAINED VARIATIONAL CALCULATION FOR ASYMMETRICAL NUCLEAR-MATTER WITH THE NEW ARGONNE POTENTIAL

The lowest order constrained variational method is used to calculate t he properties of asymmetrical nuclear matter with the new charge-indep endent breaking, Argonne V-18 (AV(18)) as well as Argonne V-14 (AV(14) ) potentials, for a wide range of density and proton to neutron ratio. The new AV(18) potential, unlike AV(14) and Delta-Reid interactions, overbinds nuclear matter at a saturation density of about 0.31 fm(-3) which agrees well with the variational method based on hypernetted cha in summation techniques. It is shown that it is not a good approximati on to use the result of nuclear and neutron matter to get the equation of state of asymmetrical nuclear matter with an empirical parabolic a pproximation. Finally, various properties of asymmetrical nuclear matt er such as incompressibility, symmetry energy, etc., are given and a c omparison is made with the other many-body techniques.