Baryogenesis from gravitational collapse without black hole formation
Published on:
17 January 2024
Primary Category:
Cosmology and Nongalactic Astrophysics
Paper Authors:
Emilie Despontin,
Sebastien Clesse,
Albert Escrivà,
Cristian Joana
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Key Details
Large fluctuations below PBH threshold collapse and locally heat plasma at QCD epoch
Rapid local heating enables efficient electroweak baryogenesis through sphaleron transitions
Baryon density from aborted PBHs is 2-3 times higher than from PBHs that form
Matching DM fraction to PBH abundance formed naturally explains baryon density
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AI generated summary
Baryogenesis from gravitational collapse without black hole formation
This paper proposes that the matter-antimatter asymmetry and baryon density were generated by the gravitational collapse of large density fluctuations at the time of the QCD transition, which locally heated the plasma enough to drive baryogenesis. Though below the threshold to form primordial black holes, these 'aborted' PBHs provide the necessary conditions. The mechanism links the dark matter and baryon abundances.
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