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SUMMARY:[JC] Heterotic String Theory suggests a QCD Axion near 0.5 neV
DTSTART:20261001T060000Z
DTEND:20261001T070000Z
DTSTAMP:20261016T094600Z
UID:indico-event-1405@indico.ibs.re.kr
DESCRIPTION:Speakers: Sang-Hui Im\n\nPerturbative heterotic string theory 
 predicts QCD axion mass bounded from below by 0.5 neV. Furthermore\, with 
 extensive search over the moduli space of Kreuzer-Skarke compactifications
 \, it could be argued that the QCD axion mass is also bounded from above b
 y 0.8 neV\, requiring the gauge coupling unification.\nInterestingly\, ass
 uming SUSY GUTs\, the predicted value of the QCD theta angle is within the
  reach of future EDM experiments. Also unlike Type IIB axiverse constructi
 ons\, the heavy axion population in the heterotic ensemble generically dec
 ays before BBN and can naturally accommodate leptogenesis.\nReferece: \n1
 ) Benbou\, Dainelli\, Reig\, Safdi https://arxiv.org/abs/2605.04142\n2) Le
 edom\, Putti\, Westphal https://arxiv.org/abs/2509.03578\n\nhttps://indic
 o.ibs.re.kr/event/1405/
LOCATION:CTPU seminar room (IBS)
URL:https://indico.ibs.re.kr/event/1405/
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