Abstract
In the framework of relativistic mean field theory, we study the effect of nonlinear cross coupling between the isoscalar–vector and isovector–vector mesons on top of G2 parametrization. The energy and pressure densities are calculated over a wide range of baryon densities. The observables such as symmetry energy and related coefficients are also evaluated systematically. The effect of cross coupling on the symmetry energy of symmetric nuclear matter is studied. The work is further extended to β-equilibrium matter to estimate the mass and radius of neutron stars and also to the baryon octet to see the effect of coupling over the equation of state.
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