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SUMMARY:UV sensitivity and scales in Quantum Gravity
DTSTART:20260616T141500Z
DTEND:20260616T154500Z
DTSTAMP:20260608T075300Z
UID:indico-event-523@indico.tpi.uni-jena.de
DESCRIPTION:Speakers: Francesco Ferrarin (NBI\, Copenhagen)\n\nRecent work
  has revealed that extremal Kerr black holes may exhibit a sensitivity to 
 higher-derivative corrections to Einstein's equations\, displaying singula
 rities in the tidal forces at the horizon. However\, in a purely gravitati
 onal context\, this "ultraviolet sensitivity" translates into a strong dep
 endence on the Wilson coefficients in the low-energy effective field theor
 y. These\, in turn\, are fixed by the underlying theory of quantum gravity
  in the ultraviolet. I will discuss how these coefficients are predicted w
 ithin the framework of asymptotically safe quantum gravity\, and show that
 \, if the quantum-gravity scale is trans-Planckian\, this horizon-scale ul
 traviolet sensitivity is avoided. I will then discuss broader implications
  for the role of scales in asymptotically safe gravity coupled to matter\,
  starting from the asymptotically safe postdiction of the top-quark mass a
 nd exploring the interplay between different notions of scales\n\nhttps://
 indico.tpi.uni-jena.de/event/523/
URL:https://indico.tpi.uni-jena.de/event/523/
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