Quantum aspects of massive gravity

Quantum aspects of massive gravity

We consider the effect of quantum interactions on Pauli–Fierz massive gravity. With generic graviton cubic interactions, we observe that the 1loop counterterms do not conform to the tree level structure of Pauli–Fierz action, resulting in the reappearance of the sixth mode ghost. Then to explore the quantum effects to the full extent, we calculate the resummed graviton propagator with an arbitr...

Quantum Aspects of Gravity

V. Frolov and L. Thorlacius QUANTUM ASPECTS OF GRAVITY 2 S.B. Giddings and L. Thorlacius INTRODUCTION TO THE INFORMATION PROBLEM 6 A. Strominger TWO-DIMENSIONAL BLACK HOLES AND THE INFORMATION PUZZLE 9 V. Frolov ENTROPY OF BLACK HOLES 12 L. Thorlacius BLACK HOLE COMPLEMENTARITY 15 D.A. Lowe CAUSALITY IN STRING THEORY 18 A.O. Barvinski NONLOCAL EFFECTIVE ACTION AND BLACK HOLES 22 P.C. Argyres UN...

Quantum Aspects of Gravity ⋆

We emphasize that a specific aspect of quantum gravity is the absence of a superselection rule that prevents a linear superposition of different gravitational charges. As an immediate consequence, we obtain a tiny, but observable, violation of the equivalence principle, provided, inertial and gravitational masses are not assumed to be operationally identical objects. In this framework, the cosm...

Topological Aspects of Quantum Gravity

Some Quantum Aspects of Three-Dimensional Einstein-Chern-Simons-Proca Massive Gravity

– We present a 3-dimensional model for massive gravity with masses induced by topological (Chern-Simons) and Proca-like mass terms. Causality and unitarity are discussed at tree-level. Power-counting renormal-izability is also contemplated. It is well-known that the linearized Einstein Lagrangian is the only one that describes (consistently with locality, causality and tree-level unitarity) a m...