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 gravitational coupling constants.
Yang-Mills vacuum structure and quantum gravity / Odintsov, S; Percacci, Roberto. - In: MODERN PHYSICS LETTERS A. - ISSN 0217-7323. - 11:22(1996), pp. 1807-1814. [10.1142/S021773239600179X]
Yang-Mills vacuum structure and quantum gravity
Percacci, Roberto
1996-01-01
Abstract
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 gravitational coupling constants.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
