Probing the Neutron Skin of Mirror Nuclei with Coupled-cluster Theory
ORAL
Abstract
An accurate determination of the neutron-skin thickness of nuclei can have important implications
in nuclear physics from the structure of neutron-rich nuclei to the equation-of-state of asymmetric
nuclear matter. However, the experimental efforts to measure the neutron skin are inherently
difficult. We calculate the neutron-skin thickness of light to medium-mass nuclei from A = 14 to
A = 64 through mirror nuclei pairs to explore the role of charge symmetry in nuclear interactions.
This data is also used to construct a relation between the neutron and proton radii of mirror pairs.
These calculations utilize different two- and three-nucleon interactions developed from chiral effective
field theory. We then use coupled-cluster (CC) theory to find the correlated ground state from an
axially-symmetric reference state. Our results are supplemented by auxiliary field diffusion Monte
Carlo (AFDMC) calculations and largely agree with experimental ground-state energies and radii
where data exist.
in nuclear physics from the structure of neutron-rich nuclei to the equation-of-state of asymmetric
nuclear matter. However, the experimental efforts to measure the neutron skin are inherently
difficult. We calculate the neutron-skin thickness of light to medium-mass nuclei from A = 14 to
A = 64 through mirror nuclei pairs to explore the role of charge symmetry in nuclear interactions.
This data is also used to construct a relation between the neutron and proton radii of mirror pairs.
These calculations utilize different two- and three-nucleon interactions developed from chiral effective
field theory. We then use coupled-cluster (CC) theory to find the correlated ground state from an
axially-symmetric reference state. Our results are supplemented by auxiliary field diffusion Monte
Carlo (AFDMC) calculations and largely agree with experimental ground-state energies and radii
where data exist.
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Presenters
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Samuel J Novario
- Los Alamos National Laboratory