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Pairing in nuclear systems with effective Gogny and Vlow-k interactions

Armen Sedrakian, T. T. S. Kuo, Herbert Müther, Peter Schuck

nucl-tharXiv:nucl-th/0308068

Abstract

The pairing properties of nuclear systems are a sensitive probe of the effective nucleon-nucleon interactions. We compare the 1S0 pairing gaps in nuclear and neutron matter derived from the phenomenological Gogny interaction and a renormalization group motivated low-momentum Vlow-k interaction extracted from realistic interactions. We find that the pairing gaps predicted by these interactions are in an excellent agreement in a wide range of sub-nuclear densities. The close agreement between the predictions of the effective forces remains intact in the case where the single particle spectra in neutron and nuclear matter are renormalized within the Hartree-Fock theory.

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