Evolution of Nuclear Spectra with Nuclear Forces

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Scientific paper

We examine how the features of nuclear spectra evolve as a consequence of the complexity (or completeness) of the forces between individual nucleons. Starting from a Hamiltonian containing the realistic Argonne v18 two-nucleon and Illinois-2 three-nucleon potentials, we construct a series of progressively simpler force models by eliminating various operator components. At each stage, we reproject the remaining operators to preserve the deuteron binding and as much nucleon-nucleon scattering behavior as feasible. We then use these models as input to quantum Monte Carlo calculations of the spectra of light nuclei up to A=10, to see how nuclear spectra evolve as the nuclear forces are made increasingly realistic.

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