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SUMMARY:The physics of Planck-ton
DTSTART:20260527T123000Z
DTEND:20260527T143000Z
DTSTAMP:20260512T054900Z
UID:indico-event-1815@indico.dfa.unipd.it
DESCRIPTION:Speakers: Stefano Profumo (UC Santa Cruz)\n\nPrimordial black 
 holes\, if produced in the early Universe\, may not evaporate completely b
 ut instead leave behind stable or long-lived Planck-mass remnants\, or "Pl
 anck-tons". I review theoretical arguments for such relics from quantum gr
 avity frameworks\, including generalized uncertainty principles\, loop qua
 ntum gravity\, and string-theoretic corrections\, which suggest a breakdow
 n of semiclassical evaporation near the Planck scale. I discuss the result
 ing relic abundance and show that even a tiny initial PBH fraction can acc
 ount for the observed dark matter\, with relics behaving as ultra-cold\, c
 ollisionless matter today. I outline possible detection avenues\, includin
 g high-frequency gravitational waves from evaporation and mergers\, electr
 omagnetic signatures of charged relics\, and direct mechanical probes. I a
 rgue that Planck-scale relics provide a testable link between quantum grav
 ity\, early-Universe cosmology\, and dark matter.\n\nhttps://indico.dfa.un
 ipd.it/event/1815/
LOCATION:1/1-2 - Aula "C. Voci" (Dipartimento di Fisica e Astronomia - Edi
 ficio Marzolo)
URL:https://indico.dfa.unipd.it/event/1815/
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