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SUMMARY:Bounding Effective Field Theories: From Flat Space to Cosmological
  Spacetimes
DTSTART:20240829T120000Z
DTEND:20240829T130000Z
DTSTAMP:20260818T144000Z
UID:indico-event-8858@indico.fysik.su.se
DESCRIPTION:Speakers: Mariana Carrillo Gonzalez (Imperial College\, London
 )\n\nN.B. New time. Abstract: Effective Field Theories (EFTs) allow us to
  describe low-energy physics without knowing the specific UV completion. T
 his comes at the cost of having free parameters (Wilson coefficients) whos
 e values encode the UV physics but are not constrained from a standard EFT
  point of view. It is well known that some values can lead to unphysical p
 roperties of these theories. In this talk\, I will present a low-energy te
 chnique to put bounds on these coefficients by requiring causal propagatio
 n. I will show how these bounds can be obtained in flat space and then mov
 e on to how to apply these techniques in cosmological spacetimes. Througho
 ut the talk\, I will present bounds on scalar and photon EFTs and show the
 ir complementarity to analytic positivity bounds.\n\nhttps://indico.fysik.
 su.se/event/8858/
LOCATION:AlbaNova A5:1041 - CoPS grupprum (AlbaNova Main Building)
URL:https://indico.fysik.su.se/event/8858/
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