71 citations · 123 across the 24 of their papers we have counts for
Showing 2004 · hep-phShow all
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hep-ph2004
The 't Hooft determinant resolution of the eta' puzzle
Alexander A. Osipov, Alex H. Blin, Brigitte Hiller
The six-quark instanton induced 't Hooft interaction, which breaks the unwanted U_A(1) symmetry of QCD, is also a sourse of semi-classical corrections to the low energy effective a…
hep-ph2004
Long distance expansion for the NJL model with SU(3) and U_A(1) breaking
A. A. Osipov, H. Hansen, B. Hiller
This work is a follow up of recent investigations, where we study the implications of a generalized heat kernel expansion, constructed to incorporate non-perturbatively the effects…