SISSA 45/94/EP hep-th/9404020 RENORMALIZATION GROUP EFFECTS IN THE CONFORMAL SECTOR OF 4D QUANTUM GRAVITY WITH MATTER
نویسنده
چکیده
We discuss the \gravitationally dressed" beta functions in the Gross{ Neveu model interacting with 2d Liouville theory and in SU(N) gauge theory interacting with the conformal sector of 4d quantum gravity. Among the e ects that we suggest may feel the gravitational dressing are the minimum of the e ective potential and the running of the gauge coupling. [email protected] [email protected]
منابع مشابه
Renormalization Group Effects in the Conformal Sector of 4d Quantum Gravity with Matter
We discuss the “gravitationally dressed” beta functions in the Gross– Neveu model interacting with 2d Liouville theory and in SU(N) gauge theory interacting with the conformal sector of 4d quantum gravity. Among the effects that we suggest may feel the gravitational dressing are the minimum of the effective potential and the running of the gauge coupling. ∗ [email protected] ∗∗ percacci@...
متن کاملRenormalizable 4D Quantum Gravity as A Perturbed Theory from CFT
We study the renormalizable quantum gravity formulated as a perturbed theory from conformal field theory (CFT) on the basis of conformal gravity in four dimensions. The conformal mode in the metric field is managed non-perturbatively without introducing its own coupling constant so that conformal symmetry becomes exact quantum mechanically as a part of diffeomorphism invariance. The traceless t...
متن کاملQuantum dilatonic gravity in d = 2 , 4 and 5 dimensions
We review (mainly) quantum effects in the theories where gravity sector is described by metric and dilaton. The one-loop effective action for dilatonic gravity in two and four dimensions is evaluated. Renormalization group equations are constructed. The conformal anomaly and induced effective action for 2d and 4d dilaton coupled theories are found. It is applied to study of quantum aspects of b...
متن کاملar X iv : h ep - t h / 93 11 05 4 v 1 9 N ov 1 99 3 Preprint - KUL - TF - 93 / 47 hep - th / 9311054 November 1993
A topological gravity is obtained by twisting the effective (2, 0) supergravity. We show that this topological gravity has an infinite number of BRST invariant quantities with conformal weight 0. They are a tower of OSp(2, 2) multiplets and satisfy the classical exchange algebra of OSp(2, 2). We argue that these BRST invariant quantities become physical operators in the quantum theory and their...
متن کاملInteraction of Low - Energy Induced Gravity with Quantized Matter – II . Temperature effects
At the very early Universe the matter fields are described by the GUT models in curved space-time. At high energies these fields are asymptotically free and conformally coupled to external metric. The only possible quantum effect is the appearance of the conformal anomaly, which leads to the propagation of the new degree of freedom-conformal factor. Simultaneously with the expansion of the Univ...
متن کامل