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SUMMARY:Infinite Distance Limits and Factorization
DTSTART;VALUE=DATE-TIME:20230321T130000Z
DTEND;VALUE=DATE-TIME:20230321T150000Z
DTSTAMP;VALUE=DATE-TIME:20230323T202340Z
UID:indico-event-1255093@indico.cern.ch
DESCRIPTION:Infinite distance limits in families of quantum theories are o
bserved to enjoy a number of seemingly universal properties: they have "lo
garithmic" metric singularities\, are always associated with weak-coupling
limits\, and---in quantum gravitational theories---are tied to the appear
anceĀ of a tower of exponentially light fields. The goal of this talk is t
o explain why these features are universal. By using information-theoretic
tools\, I will explain how the first two properties are consequences of u
nitarity: it dictates that\, in these limits\, observables must factorize
and the metric must have a logarithmic singularity. I will also explain wh
y these limits necessarily have such dramatic behavior in quantum gravitat
ional theories. Since gravity universally couples to stress energy\, it pr
esents a fundamental obstacle to factorization and must decouple in any co
nsistent factorization limit. I will explain how this perspective provides
a bottom-up motivation for the Swampland Distance Conjecture and points t
owards ways around it.\n\nhttps://indico.cern.ch/event/1255093/
LOCATION:CERN 4/3-006 - TH Conference Room
URL:https://indico.cern.ch/event/1255093/
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