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SUMMARY:The cosmic Equation of State\, asymmetries & Primordial Black Hole
 s
DTSTART:20260512T120000Z
DTEND:20260512T130000Z
DTSTAMP:20260520T052200Z
UID:indico-event-104@indico.zdv.uni-mainz.de
DESCRIPTION:Speakers: Maël Gonin (TU Dresden)\n\nGravitational wave detec
 tion has revived primordial black holes (PBHs) as a compelling dark matter
  candidate. I present a wide picture of PBHs as cosmological conundrum sol
 ver\, from their formation to their cosmological implications. PBH formati
 on from overdensity collapse during the radiation-dominated era depends se
 nsitively on the cosmic equation of state\, particularly across the QCD tr
 ansition. Following Bödeker et al. 2021\, I investigate how lepton flavor
  asymmetries—poorly constrained prior to neutrino decoupling—impact th
 e cosmic trajectory through the 5+1 dimensional space of chemical potentia
 ls (μ_B\, μ_Q\, μ_Le\, μ_Lμ\, μ_Lτ) and temperature. High lepton as
 ymmetries could remain hidden in the undetectable cosmic neutrino backgrou
 nd\, enabling exploration of a large parameter space with significant effe
 cts on both the cosmic phase diagram trajectory and the resulting PBH mass
  distribution. I compute the equation of state for various lepton flavor a
 symmetry scenarios\, extending beyond previous work by incorporating charm
  quark contributions using the latest lattice QCD and functional QCD data.
 \n\nhttps://indico.zdv.uni-mainz.de/event/104/
LOCATION:R. 05-127 (Lorentz-Room)
URL:https://indico.zdv.uni-mainz.de/event/104/
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