The spin-orbit splitting of the and hole states in is studied with realistic nuclear forces and the variational cluster Monte Carlo method. The results show that the two-nucleon L⋅S forces give approximately half of the observed splitting, while the other half comes from pion exchange interactions between three or more nucleons. The observed splitting is fairly well reproduced by these calculations based on nonrelativistic nuclear many-body theory.
- Received 19 October 1992
- Published in the issue dated 26 April 1993
© 1993 The American Physical Society