From renormalization group flows to cosmology

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.

33 pages, 4 figures. Review for the special issue "Coarse Graining in Quantum Gravity: Bridging the Gap between Microscopic Models and Spacetime-Physics", Frontiers in Physics

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• Gravitational antiscreening in stellar interiors
• Bouncing Cosmologies

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• The Asymptotically Safe Standard Model: From quantum gravity to dynamical chiral symmetry breaking
• Generalized uncertainty principle and Asymptotic Safe gravity
• Quantum improved charged black holes
• Asymptotic Safety: Swampland or Wonderland?
• Quasinormal modes of an improved Schwarzschild black hole
• Accretion disk around a Schwarzschild black hole in asymptotic safety
• Black Holes in Asymptotically Safe Gravity
• Formation and evaporation of quantum black holes from the decoupling mechanism in quantum gravity
• Running Newton Coupling, Scale Identification and Black Hole Thermodynamics
• A curvature bound from gravitational catalysis in thermal backgrounds
• On the weak-gravity bound for a shift-symmetric scalar field
• Atom falling into a quantum corrected charged black hole and HBAR entropy
• Bouncing with shear: Implications from quantum cosmology
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• Planck Stars from a Scale-dependent Gravity theory
• Shadow and weak deflection angle of a black hole in nonlocal gravity
• Scale-invariance at the core of quantum black holes
• Schwarzschild-like Wormholes in Asymptotically Safe Gravity
• Quantum gravity phenomenology at the dawn of the multi-messenger era -- A review
• Inverse logarithmic correction in the HBAR entropy of an atom falling into a renormalization group improved charged black hole
• Is asymptotically safe inflation eternal?
• Shift-symmetric Horndeski gravity in the asymptotic-safety paradigm
• $e^{+}{e}^{-}\to {\mu }^{+}{\mu }^{-}$ in the Asymptotically Safe Standard Model
• On the ultraviolet behavior of conformally reduced quadratic gravity
• Image of Quantum Improved Regular Kerr Black Hole and Parameter Constraints from EHT Observations
• Lectures in Quantum Gravity
• Time Evolution and Thermal Renormalization Group Flow in Cosmology
• Vacuum Energy and Renormalization of the Field-Independent Term
• Constraining the swiss-cheese IR-fixed point cosmology with cosmic expansion
• Regular Black Hole Cores via Gravitational Evanescence of Collapsing Matter
• Causality, unitarity and stability in quantum gravity: a non-perturbative perspective
• Phenomenological footprints of Lambda varying gravity theories inspired from quantum gravity models in the multi-messenger era
• Thermal RG Flow of AS Quantum Gravity
• Shadow of rotating black holes with consistent thermodynamics
• Invariant Renormalization-Group improvement
• Asymptotic Safety and the Cosmic Coincidence Problem
• Renormalization group approaches to Quantum Gravity and Tensions in Modern Cosmology
• On the Quantum Improved Affine Gravity