Brigitte HILLER  and  Alexander A. OSIPOV
Centro de Fisica Teorica,
Departamento de Fisica,
Universidade de Coimbra,
P-3004516 Coimbra, PORTUGAL

SU(3) flavor dynamics within a generalized heat kernel expansion

Our recent work [1, 2] based on the Schwinger-DeWitt method of background fields fills the gap which existed in describing the asymptotic expansion of the one-loop effective action with virtual heavy fermion masses. This approach faithfully mirrors the vacuum structure of the underlying theories. Moreover, for the case of taking into account the 't Hooft six quark flavor mixing interaction, we have shown that the quantum fluctuations, which had not been considered previously , lead to a different scenario for constituent quark masses and related condensates in QCD.


  1. A.A. Osipov, B. Hiller, Phys. Rev. D 64 (2001) 087701.
  2. A.A. Osipov, B. Hiller, Phys. Lett. B539 (2002) 76.