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UID:1441@qft.physik.hu-berlin.de
DTSTART;TZID=Europe/Berlin:20200424T140000
DTEND;TZID=Europe/Berlin:20200424T150000
DTSTAMP:20200423T150122Z
URL:https://qft.physik.hu-berlin.de/next-seminars/gabriel-bliard-hu-berlin
 /
SUMMARY:Gabriel  Bliard\, HU Berlin - 
DESCRIPTION:Gabriel Bliard\, HU Berlin\n\nTitle: Analytic bootstrap and 
 Witten diagrams for the ABJM Wilson line\n\nAbstract:\n\nWilson Line
 s are fundamental\, non-local observables in any gauge theory. Recent effo
 rts have been successful in constructing defect theories\, whose fundament
 al fields are operators inserted on these lines. In models with an AdS/CFT
  dual\, the strong coupling description of these operator insertions are s
 mall deformations of the minimal surface solution in the appropriate strin
 g background. I will present the perturbative calculation of four-point co
 rrelators in the defect CFT defined on the 1/2-BPS Wilson line of ABJM the
 ory (arXiv:2004.07849). I will cover the Witten diagram calculation\, obta
 ining the correlation functions of the deformations of the minimal surface
 . Using symmetry considerations\, I will argue the matching of fields/oper
 ators as well as their natural organisation in superspace\, which relates 
 the family of correlators to a single function of the 1D invariant cross r
 atio. Subsequently\, I will show that this result can be found in an indep
 endant manner by selecting the minimal bootstrapped solution. Finally\, I 
 will present the CFT data that can be extracted from this.
CATEGORIES:Pizza Seminars
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