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nucl-th2009
Density functionals derived from Feynman diagrams
Georges Ripka
We construct a stationary density functional for the partition function from a chosen set of one (boson) line irreducible Feynman diagrams. The construction does not proceed by the…
nucl-th2007
The classical pion field in a nucleus
Georges Ripka
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…