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SUMMARY:Malte Buschmann (Princeton University)
DTSTART:20230207T193000Z
DTEND:20230207T203000Z
DTSTAMP:20260423T024512Z
UID:nhetc/68
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/nhetc/68/">T
 he post-inflationary axion</a>\nby Malte Buschmann (Princeton University) 
 as part of NHETC Seminar\n\n\nAbstract\nThe axion is a hypothetical partic
 le that solves the strong CP problem of quantum chromodynamics (QCD) while
  simultaneously being an excellent dark matter candidate. If the axion is 
 generated after inflation\, many unique objects arise from the theory\, fr
 om axion strings and domain walls to oscillons\, miniclusters\, and axion 
 stars. The result is many potentially observable signatures\, whether in t
 he CMB\, the gravitational wave background or in neutron star data. More i
 mportantly\, this scenario is entirely deterministic\, allowing precise pr
 edictions through numerical simulations. In this talk\, I will go through 
 the cosmological history of such a post-inflationary axion to put the vari
 ous phenomena into context and highlight the remaining open questions.\n
LOCATION:https://researchseminars.org/talk/nhetc/68/
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