Electromagnetic reactions from coupled-cluster theory
Sonia Bacca, Mirko Miorelli, Gaute Hagen
TL;DR
This paper reviews recent advances in calculating electromagnetic reactions in light and medium-mass nuclei using coupled-cluster theory, highlighting new results on cross sections, polarizabilities, and sum rules with comparisons to exact methods.
Contribution
It presents new coupled-cluster calculations of electromagnetic observables and sum rules, including comparisons to exact hyperspherical harmonics for helium.
Findings
Coupled-cluster theory accurately predicts photodisintegration cross sections.
Electric dipole polarizabilities are computed for oxygen and calcium isotopes.
Coulomb sum rule results are provided for 4He and 16O.
Abstract
We review recent results for electromagnetic reactions and related sum rules in light and medium-mass nuclei obtained from coupled-cluster theory. In particular, we highlight our recent computations of the photodisintegration cross section of 40Ca and of the electric dipole polarizability for oxygen and calcium isotopes. We also provide new results for the Coulomb sum rule for 4He and 16O. For 4He we perform a thorough comparison of coupled-cluster theory with exact hyperspherical harmonics.
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