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DTSTART:20240331T010000
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DTSTART:20241027T010000
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DTSTART;TZID=Europe/Rome:20241217T110000
DTEND;TZID=Europe/Rome:20241217T123000
DTSTAMP:20260422T071002
CREATED:20241209T104107Z
LAST-MODIFIED:20241209T104107Z
UID:38870-1734433200-1734438600@w3.lnf.infn.it
SUMMARY:Two axions system\, formalism and applications in cosmology
DESCRIPTION:Speaker: Kristjan Müürsepp (NICPB\, Tallinn\, Estonia) \nA pseudo Nambu-Goldstone boson (PNGB) coupled to a confining gauge group via an anomalous  term is characterised\, during the confining phase transition\, by a temperature dependent mass. \nI will study the possibility that a PNGB  coupled to a hidden gauge group  undergoing confinement  at a temperature different from the QCD  confining temperature could hit a level crossing with the QCD axion. This can  trigger axion-dark axion conversion. After describing the dynamics of the two axion system\, I will address possible applications in cosmology.
URL:/event/two-axions-system-formalism-and-applications-in-cosmology/
LOCATION:Aula Salvini
CATEGORIES:Seminari teorici
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