[paper] Quantum Monte Carlo calculations of magnetic moments and M1 transitions in A≤7 nuclei including meson-exchange currents

Quantum Monte Carlo calculations of magnetic moments and M1 transitions in A≤7 nuclei including meson-exchange currents

L.E. Marcucci et al.

doi: 10.1103/PhysRevC.78.065501

Green’s function Monte Carlo calculations of magnetic moments and M1 transitions including two-body meson-exchange current (MEC) contributions are reported for A≤7 nuclei. The realistic Argonne v₁₈ two-nucleon and Illinois-2 three-nucleon potentials are used to generate the nuclear wave functions. The two-body meson-exchange operators are constructed to satisfy the continuity equation with the Argonne v₁₈ potential. The MEC contributions increase the A=3,7 isovector magnetic moments by 16% and the A=6,7 M1 transition rates by 17–34%, bringing them into very good agreement with the experimental data.

Tags: magnetic momentMECMonte CarlopaperPRC