<i>Ab initio</i> calculations of electric dipole moments of light nuclei
Paul Froese, P. Navrátil
Abstract
In any finite system, the presence of a nonzero permanent electric dipole moment (EDM) would indicate CP violation beyond the small violation predicted in the standard model. Here, we use the ab initio no-core shell model framework to theoretically investigate the magnitude of the nuclear EDM. We calculate EDMs of several light nuclei using chiral two- and three-body interactions and a PT-violating Hamiltonian based on a one-meson-exchange model. We present a benchmark calculation for $^{3}\mathrm{He}$, as well as results for the more complex nuclei $^{6,7}\mathrm{Li}, ^{9}\mathrm{Be}, ^{10,11}\mathrm{B}, ^{13}\mathrm{C}, ^{14,15}\mathrm{N}$, and $^{19}\mathrm{F}$. Our results suggest that different nuclei can be used to probe different terms of the PT-violating interaction. These calculations allow us to suggest which nuclei may be good candidates in the search for a measurable permanent electric dipole moment.