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SUMMARY:Renormalization and Field Redefinition Invariance in Effective Fie
 ld Theories: Geometric Interpretation and the Origin of Higher-Loop Infini
 ties.
DTSTART:20250502T193000Z
DTEND:20250502T213000Z
DTSTAMP:20260414T130200Z
UID:indico-event-9730@indico.slac.stanford.edu
DESCRIPTION:Speakers: Julie Pagès (UC\, San Diego)\n\nPhysical observable
 s are invariant under field redefinition\, but the effective field theory 
 (EFT) Lagrangian is not. Focusing on the derivation of the renormalization
  group equations\, we will see in the first part of this talk\, how the ge
 ometric interpretation of EFTs makes this invariance manifest at every ste
 p of the calculation. We will present a unified geometric framework includ
 ing scalars\, gauge bosons\, and fermions. In the second part\, we will ex
 plain the origin of infinities arising in the two-loop field anomalous dim
 ension due to the use of field redefinitions in the renormalization proced
 ure.\n\nhttps://indico.slac.stanford.edu/event/9730/
LOCATION:48/2-224 - Madrone (SLAC)
URL:https://indico.slac.stanford.edu/event/9730/
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