corner
corner
APS » Journals » Phys. Rev. C » Volume 78 » Issue 6
< Previous Article | Next Article >

Phys. Rev. C 78, 065501 (2008) [10 pages]

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

Download: PDF (238 kB) Buy this article Export: BibTeX or EndNote (RIS)

L. E. Marcucci1,2,*, Muslema Pervin3,†, Steven C. Pieper3,‡, R. Schiavilla4,5,§, and R. B. Wiringa3,**
1Department of Physics “Enrico Fermi,” University of Pisa, I-56127 Pisa, Italy
2INFN, Sezione di Pisa, I-56127 Pisa, Italy
3Physics Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
4Theory Center, Jefferson Laboratory, Newport News, Virginia 23606, USA
5Department of Physics, Old Dominion University, Norfolk, Virginia 23529, USA

Received 29 September 2008; published 10 December 2008

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.

© 2008 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevC.78.065501
DOI:
10.1103/PhysRevC.78.065501
PACS:
21.10.Ky, 21.30.Fe, 23.20.Js, 27.20.+n
 
< Previous Article | Next Article >