Small Spins of Primordial Black Holes from Random Geometries: Bekenstein-Hawking Entropy and Gravitational Wave Observations

Dec 12, 2018
9 pages
e-Print:
Report number:
  • LIGO-P1800228

Citations per year

201920202021202220232731
Abstract: (arXiv)
Black hole entropy is a robust prediction of quantum gravity with no established phenomenological consequences to date. We use the Bekenstein-Hawking entropy formula and general-relativistic statistical mechanics to determine the probability distribution of random geometries uniformly sampled in phase space. We show that this statistics (in the limit 0\hbar\to 0) is relevant to large curvature perturbations, resulting in a population of primordial black holes with zero natal spin. In principle, the identification of such a population at LIGO, Virgo, and future gravitational wave observatories could provide the first observational evidence for the statistical nature of black hole entropy.
Note:
  • 9 pages, 3 figures; v2: New section on general-relativistic statistical mechanics
  • black hole: entropy
  • black hole: spin
  • spin: 0
  • gravitational radiation
  • quantum gravity
  • statistical analysis
  • VIRGO
  • LIGO