The classical pion field in a nucleus

Details The classical pion field in a nucleus The classical pion field in a nucleus

2007-11-08

arxiv.org/abs/0711.1280v2

Nucl.Phys.A814:33-47,2008

Physics

Nuclear Physics

Nuclear Theory

17 pages, 3 figures, new appendix, revised conclusions

Scientific paper

10.1016/j.nuclphysa.2008.10.004

A self-consistent symmetry arises when the nucleon angular momentum j and the
isospin t are coupled to a grand spin G. Closed G shells become sources of a
classical pion field with a hedgehog shape. Although the amplitude of the pion
field, as measured by the chiral angle, is small, it is found to perturb
significantly the energies of the nucleon orbits.

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