Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
1996-06-29
Mod.Phys.Lett.A11:1807-1814,1996
Physics
High Energy Physics
High Energy Physics - Theory
Latex file, 8 pages
Scientific paper
10.1142/S021773239600179X
Using renormalization group methods we calculate the derivative expansion of the effective Lagrangian for a covariantly constant gauge field in curved spacetime. Curvature affects the vacuum, in particular it could induce phase transitions between different vacua. We also consider the effect of quantum fluctuations of the metric , in the context of a renormalizable $R^2$ theory. In this case the critical curvature depends on the gravi tational coupling constants.
Odintsov Sergei
Percacci Roberto
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