Quantum Monte Carlo calculations of magnetic moments and M1 transitions   in A<=7 nuclei including meson-exchange currents
  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. 
L. E. Marcucci, Muslema Pervin, Steven C. Pieper, R. Schiavilla, R. B.   Wiringa