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SUMMARY:"Small instantons and the axion mass" by Alex Pomarol (IFAE)
DTSTART:20220510T140000
DTEND:20220510T150000
DTSTAMP:20260506T015749Z
UID:ce56dac1eb331f1b0085339f23cb05325c6f0f4ba04a9f1da18b0747
CATEGORIES:Conferences - Seminars
DESCRIPTION:Alex Pomarol\nI will discuss the sensitivity of the axion mass
  on UV modifications of QCD. In particular\, I will consider contributions
  from small instantons to the axion mass in the case in which gluons propa
 gate in some extra dimension at high energies. In the case of a d=5 AdS sp
 ace\, this is expected to be similar to QCD interacting with an additional
   (strongly-coupled) colored sector. Contrary to expectations\, I will sh
 ow that small instantons are suppressed\, and only UV localized instanton-
 anti-instanton contributions can be sizeable. For flat extra dimensions\, 
 I will show that small instantons can be enhanced by power-law corrections
  due to the presence of the Kaluza-Klein states.
LOCATION:BSP 727 https://plan.epfl.ch/?room==BSP%20727 https://epfl.zoom.u
 s/j/67455207777?pwd=Z005aDlHRzNZQjFRZGFlVnU5eDMwdz09
STATUS:CONFIRMED
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