Black holes in asymptotic safety with higher derivatives: accretion and stability analysis
arXiv:2104.04932 · doi:10.1088/1674-1137/abf72d
Abstract
We review the issue of steady spherically symmetric accretion onto a renormalization group improved Schwarzschild space-time which is solution to an asymptotically safe theory (AS) containing high-derivative terms. We use a Hamiltonian dynamical system approach for the analysis of the accretion of four types of isothermal test fluids: ultra-stiff fluid, ultra-relativistic fluid, radiation fluid, and sub-relativistic fluid. An important outcome of our study is that, contrary to what claimed in a recent work, there exist physical solutions for the accretion of an ultra-relativistic fluid in AS which include subsonic, supersonic and transonic regimes. We also study quantum corrections to the known stability of the accretion in general relativity (GR). To this end we use a perturbative procedure based on the continuity equation with the mass accretion rate being the perturbed quantity. Two classes of perturbations are studied: standing waves and travelling waves. We find that quantum gravity effects either enhance or diminish the stability of the accretion depending on the type of test fluid and depending on the radial distance to the central object.
arXiv comment20 pages, 11 figures, accepted for publication in Chinese Physics C
References in corpus (50)
- Nonperturbative Evolution Equation for Quantum Gravity
- Renormalization group improved black hole spacetimes
- Renormalization Group Flow of Quantum Gravity in the Einstein-Hilbert Truncation
- Asymptotic safety in higher-derivative gravity
- Non-Trivial Ultraviolet Fixed Point in Quantum Gravity
- Ultraviolet properties of f(R)-Gravity
- The Running Gravitational Couplings
- On the renormalization group flow of f(R)-gravity
- Is Quantum Einstein Gravity Nonperturbatively Renormalizable?
- Taming perturbative divergences in asymptotically safe gravity
- Asymptotic safety in the f(R) approximation
- Charged Black Holes in Phantom Cosmology
- Ghost anomalous dimension in asymptotically safe quantum gravity
- Black holes and asymptotically safe gravity
- Structural aspects of asymptotically safe black holes
- Ghost wave-function renormalization in Asymptotically Safe Quantum Gravity
- Quantum Gravity Effects in the Kerr Spacetime
- Astrophysical implications of hypothetical stable TeV-scale black holes
- Asymptotically free scalar curvature-ghost coupling in Quantum Einstein Gravity
- Black holes in an asymptotically safe gravity theory with higher derivatives
- Fluid accretion onto a spherical black hole: relativistic description versus Bondi model
- Ultra-hard fluid and scalar field in the Kerr-Newman metric
- Accretion onto a black hole in a string cloud background
- Fixed-Functionals of three-dimensional Quantum Einstein Gravity
- Astrophysical flows near gravity black holes
- Evolution of a Kerr-Newman black hole in a dark energy universe
- Accretion onto a higher dimensional black hole
- Accretion of New Variable Modified Chaplygin Gas and Generalized Cosmic Chaplygin Gas onto Schwarzschild and Kerr-Newman Black holes
- Stability of relativistic Bondi accretion in Schwarzschild-(anti-)de Sitter spacetimes
- Phantom Accretion by Five Dimensional Charged Black Hole
- Universality and backreaction in a general-relativistic accretion of steady fluids
- Faddeev-Popov ghosts in quantum gravity beyond perturbation theory
- Cyclic and heteroclinic flows near general static spherically symmetric black holes
- Asymptotic Safety, Singularities, and Gravitational Collapse
- Quantum gravity corrections to accretion onto a Schwarzschild black hole
- Backreaction of accreting matter onto a black hole in the Eddington-Finkelstein coordinates
- Infrared fixed point in quantum Einstein gravity
- Improved Reissner-Nordström-(A)dS Black Hole in Asymptotic Safety
- On the stability of self-gravitating accreting flows
- Critical properties of spherically symmetric black hole accretion in Schwarzschild geometry
- Pseudo-Schwarzschild description of transonic spherical accretion onto compact objects
- Viscosity in spherically symmetric accretion
- Accretion with back reaction
- Asymptotic Safety, Asymptotic Darkness, and the hoop conjecture in the extreme UV
- Quasi-normal acoustic oscillations in the Michel flow
- Acoustic geometry through perturbation of mass accretion rate - radial flow in static spacetimes
- Perturbations on steady spherical accretion in Schwarzschild geometry
- Accretion on High Derivative Asymptotically Safe Black Holes
- Critical properties of spherically symmetric accretion in a fractal medium
- Perturbations of self-similar Bondi accretion