Effects of primordial black holes quantum gravity decay on galaxy clustering

Abstract

It has been recently suggested that small mass black holes (BHs) may become unstable due to quantum-gravitational effects and eventually decay, producing radiation, on a timescale shorter than the Hawking evaporation time. We argue that the existence of a population of low-mass Primordial Black Holes (PBHs) acting as a fraction of the Universe dark matter component can be used to test proposed models of quantum decay of BHs via their effect on galaxy number counts. We study what constraints future galaxy clustering measurements can set on quantum-gravity parameters governing the BH lifetime and PBH abundance. In case of no detection of such effects, this would rule out either the existence of a non-negligible number of small PBHs, or the BH quantum decay scenario (or both). In case of independent observations of PBHs, the observables discussed here could be used to study the quantum effects that modify the final fate of BHs.

7 pages, 4 figures

References in corpus (14)

• Primordial Black Holes as Dark Matter
• Primordial black hole constraints for extended mass functions
• Microlensing and dynamical constraints on primordial black hole dark matter with an extended mass function
• Quantum Break-Time of de Sitter
• Constraints on Primordial Black Holes with Extended Mass Functions
• Orbital eccentricities in primordial black holes binaries
• Fast Radio Bursts and White Hole Signals
• Error analysis in cross-correlation of sky maps: application to the ISW detection
• Anisotropic Magnification Distortion of the 3D Galaxy Correlation: I. Real Space
• Planck star phenomenology
• Probing Primordial-Black-Hole Dark Matter with Gravitational Waves
• Astronomical tests for quantum black hole structure
• Lensing Corrections to Features in the Angular Two-Point Correlation Function and Power Spectrum
• Quantum Gravity Effects around Sagittarius A*

Cited by in corpus (12)

• Fundamental Physics with the Square Kilometre Array
• New Horizons for Fundamental Physics with LISA
• Constraining primordial black hole masses with the isotropic gamma ray background
• From Primordial Black Holes Abundance to Primordial Curvature Power Spectrum (and back)
• Lensing of fast radio bursts: future constraints on primordial black hole density with an extended mass function and a new probe of exotic compact fermion and boson stars
• Primordial regular black holes as all the dark matter. II. Non-time-radial-symmetric and loop quantum gravity-inspired metrics
• Primordial regular black holes as all the dark matter. I. Time-radial-symmetric metrics
• Learning how to surf: Reconstructing the propagation and origin of gravitational waves with Gaussian Processes
• Black to white transition of a charged black hole
• Primordial regular black holes as all the dark matter. III. Covariant canonical quantum gravity models
• A fixed point for black hole distributions
• Measuring the last burst of non-singular black holes