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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 |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| MARRONE MATTEO GABRIEL-R.pdf | 499.64 kB | Adobe PDF | View/Open |
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