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Gluon Condensation in Nonperturbative Flow Equations
M. Reuter, C. Wetterich
We employ nonperturbative flow equations for an investigation of the effective action in Yang-Mills theories. We compute the effective action for constant color magnetic fie…
Two flavor chiral phase transition from nonperturbative flow equations
J. Berges, D. -U. Jungnickel, C. Wetterich
We employ nonperturbative flow equations to compute the equation of state for two flavor QCD within an effective quark meson model. This yields the temperature and quark mass depen…
Effective Nonlocal Euclidean Gravity
C. Wetterich
A nonlocal form of the effective gravitational action could cure the unboundedness of euclidean gravity with Einstein action. On sub-horizon length scales the modified gravitationa…
The Linear Meson Model and Chiral Perturbation Theory
Dirk-U. Jungnickel, C. Wetterich
We compare the linear meson model and chiral perturbation theory in next to leading order in the quark mass expansion. In particular, we compute the couplings L_4--L_8 of chiral pe…