Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/223102
Title: Primordial black hole abundance from the power spectrum of cosmological perturbations
Author: Marrone, Matteo Gabriel
Director/Tutor: Garriga Torres, Jaume
Keywords: Cosmologia
Col·lapse gravitacional
Treballs de fi de grau
Cosmology
Gravitational collapse
Bachelor's theses
Issue Date: Jun-2025
Abstract: A random field of cosmological perturbations may have rare high peaks which evolve non-linearly after they cross the horizon during the radiation dominated era, forming primordial black holes (PBH). Using recent results for the statistics of large initial overdensities, we will consider a family of well motivated profiles for such overdensities, determining the critical amplitude which causes them to collapse gravitationally. This is relevant for determining the abundance of PBH for a given primordial power spectrum of cosmological perturbations.
Note: Treballs Finals de Grau de Física, Facultat de Física, Universitat de Barcelona, Curs: 2025, Tutor: Jaume Garriga Torres
URI: https://hdl.handle.net/2445/223102
Appears in Collections:Treballs Finals de Grau (TFG) - Física

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