University of Connecticut

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Particle, Astrophysics, And Nuclear Physics Seminar

Monday, November 30, 2020
2:00pm – 3:00pm

Storrs Campus

Prof. H.Haggard, Bard College

Why do so many black holes measured in gravitational waves have zero spin?

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 \( \hbar \to 0\) ) 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.


Prof. L. Jin

Physics Department (primary), College of Liberal Arts and Sciences, UConn Master Calendar

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