56 citations · 71 across the 9 of their papers we have counts for
9 papers
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…
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…
Baryons as Solitons in Chiral Quark Models
B. Golli, W. Broniowski, G. Ripka
We describe the formation of solitons in NJL-type models and discuss the influence of the regularization scheme on the stability of the solution. We concentrate on models with non-…
Vacuum properties in the presence of quantum fluctuations of the quark condensate
G. Ripka
The quantum fluctuations of the quark condensate are calculated using a regulated Nambu Jona-Lasinio model. The corresponding quantum fluctuations of the chiral fields are compared…
Non-local regularization of chiral quark models in the soliton sector
Georges Ripka, Bojan Golli
A chiral quark model is described which is regularized in terms of Lorentz invariant non-local interactions. The model is regularized to all loop orders and it ensures the proper q…
Solitons in a chiral quark model with non-local interactions
Bojan Golli, Wojciech Broniowski, Georges Ripka
Hedgehog solitons are found in a chiral quark model with non-local interactions. The solitons are stable without the chiral-circle constraint for the meson fields, as was assumed i…