From Renormalization Group Flows to Cosmology
Alessia Platania
Abstract
According to the asymptotic-safety conjecture, the gravitational renormalization group flow features an ultraviolet-attractive fixed point that makes the theory renormalizable and ultraviolet complete. The existence of this fixed point entails an antiscreening of the gravitational interaction at short distances. In this paper we review the state-of-the-art of phenomenology of Asymptotically Safe Gravity, focusing on the implications of the gravitational antiscreening in cosmology.
Topics & Concepts
CosmologyAsymptotic safety in quantum gravityRenormalization groupFixed pointPhysicsPhenomenology (philosophy)GravitationConjectureTheoretical physicsRenormalizationMathematical physicsClassical mechanicsQuantum gravityMathematicsQuantum mechanicsEpistemologyPhilosophyMathematical analysisPure mathematicsQuantumCosmology and Gravitation TheoriesBlack Holes and Theoretical PhysicsParticle physics theoretical and experimental studies