Göttingen 2025 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 62: Search for Dark Matter III
T 62.1: Vortrag
Mittwoch, 2. April 2025, 16:15–16:30, VG 4.102
Primordial Black Hole: from very early universe to Dark Matter — •Maël Gonin1,2, Günther Hasinger1,2, and David Blaschke3,4,5 — 1Deutsches Zentrum für Astrophysik, Görlitz 02826, Germany — 2IKTP TU Dresden, Zellescher Weg 19, 01069 Dresden, Germany — 3Institute of Theoretical Physics, University of Wroclaw, Wroclaw, Poland — 4Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany — 5Center for Advanced Systems Understanding, 02826 Görlitz, Germany
Dark Matter (DM), comprising 30% of the universe’s energy, remains one of cosmology*s greatest mysteries. Primordial Black Holes (PBHs), theorized by Hawking and Carr (1971), are compelling DM candidates as purely gravitational, non-baryonic objects. Though unproven, PBHs offer a unique alternative to particle DM (pDM) and insights into the early universe. We develop a novel PBH mass spectrum based on the equation of state (EoS) of the early universe, where phase transitions enhance PBH formation probabilities. Using advanced quark matter simulations, we also explore lepton flavor asymmetry and the possibility of a 17 MeV boson observed in electron-positron pair production. Additionally, N-body simulations using PeTar examine PBH detectability, focusing on globular cluster dynamics and PBH-star binaries, such as those observed by the Gaia collaboration. This presentation will discuss these approaches and their implications for identifying PBHs as DM candidates.
Keywords: Black hole; Dark Matter; Cosmology; Phase Transition