TICC2 STATE-DEPENDENT CORRELATIONS IN NUCLEI

Abstract

We use the TICC2, a translationally invariant reformulation of the coupled cluster method (CCM) at the sub(2) level, to study finite nuclei within the p-shell. These nuclei were previously studied with the linearised TICI2 wave function, but the role of the higher order terms had not been discussed for nuclei. We shall include the quadratic terms of the wave function within a coordinate-space implementation of the method, and consider state-dependent correlations with the same structure as the semi-realistic interactions used. Using CCM techniques and gaussian expansions we compute the ground-state energies of these nuclei.