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 nu(18) 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 nu(18) 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.
|Autori:||Marcucci L; Pervin M; Pieper SC; Schiavilla R; Wiringa RB|
|Titolo:||Quantum Monte Carlo calculations of magnetic moments and M1 transitions in A <= 7 nuclei including meson-exchange currents|
|Anno del prodotto:||2008|
|Digital Object Identifier (DOI):||10.1103/PhysRevC.78.065501|
|Appare nelle tipologie:||1.1 Articolo in rivista|