Quantum gravity phenomenology with primordial black holes.

Vidotto F.
  Mercoledì 13/09   09:00 - 13:00   Aula A203   III - Astrofisica
Non-perturbative quantum gravity prevents the formation of curvature singularities and may allow black holes to decay with a lifetime much shorter than evaporation time. This could open a new window for quantum-gravity phenomenology, in connection with the existence of primordial black holes. Primordial black holes are possible candidates for dark matter, and the presence of these quantum effects leave a signature on cosmological observables in the early universe and in the late universe as well. The astrophysical emission from the explosion of a primordial black hole is potentially observable in submillimeter, radio and gamma wavelengths. Such emissions can be discriminated from other astrophysical sources because of the peculiar way the emitted wavelength scales with distance. In particular, the spectrum of the diffuse radiation produced by those objects presents a distortion due to this scaling.