Robust ab initio predictions for dimensionless ratios of E2 and radius observables. I. Electric quadrupole moments and deformation

• Main Authors: Caprio, Mark A, Maris, Pieter
• Format: Journal Article
• Language: English
• Published: 05.09.2024
• Subjects: Physics - Nuclear Theory

Converged results for E2 observables are notoriously challenging to obtain in ab initio no-core configuration interaction (NCCI) approaches. Matrix elements of the E2 operator are sensitive to the large-distance tails of the nuclear wave function, which converge slowly in an oscillator basis expansi...