Speaker
Dr
Omar Zanusso
Description
We discuss the low-energy gravitational effective action induced by quantum fluctuations of two- and four-dimensional massive matter fields. We show that the effective action agrees with expectations based on the Appelquist-Carazzone theorem and provide a renormalization group interpretation of the results which is rather scheme-independent in that it does not depend explicitly on a cutoff scale. Our findings point at interesting but still unexplored properties of the beta function of the Newton's constant and its bottom-up relation with conformal field theory.
