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SUMMARY:Michele Redi (INFN\, Florence)
DTSTART:20240408T090000Z
DTEND:20240408T100000Z
DTSTAMP:20260423T024825Z
UID:NKUA-HEP/18
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/NKUA-HEP/18/
 ">The meso-inflationary axion scenario</a>\nby Michele Redi (INFN\, Floren
 ce) as part of NKUA HEP Seminars\n\n\nAbstract\nIn this talk I will descri
 be a new scenario for the QCD axion where the Peccei-Quinn symmetry is bro
 ken after the beginning of visible inflation. This regime interpolates bet
 ween popular pre-inflationary and post-inflationary axion scenarios with d
 ifferent phenomenological features from both. In particular in some region
  of parameters the PQ symmetry breaking is visible after QCD confinement\,
  modifying the axion dark matter abundance and with novel predictions for 
 axion mini-clusters. I will then show\, using the stochastic formalism of 
 inflation\, that the meso-inflationary regime is realized even in the simp
 lest scenario\, the KSVZ axion\, when the decay constant of the axion is c
 omparable to the Hubble scale during inflation for specific values of the 
 quartic coupling.\n
LOCATION:https://researchseminars.org/talk/NKUA-HEP/18/
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