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SUMMARY:Gabriele Casagrande (CPHT\, Polytechnique)
DTSTART:20250514T140000Z
DTEND:20250514T150000Z
DTSTAMP:20260423T052450Z
UID:AnLy/55
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/AnLy/55/">A 
 unique coupling of the massive spin-2 field to supergravity</a>\nby Gabrie
 le Casagrande (CPHT\, Polytechnique) as part of AnLy Strings and Fields on
 line seminars\n\n\nAbstract\nIn this talk\, I will discuss the coupling of
  a massive spin-2 field to (undeformed) D=4\, N=1 supergravity. We do so b
 y constructing the general stress-energy tensor multiplet for the N=1 mass
 ive spin-2 supermultiplet. We show that\, at leading order in the Planck m
 ass\, this coupling is unique and characterized by a specific non-minimal 
 coupling to the Riemann tensor. The massive spin-2 sector of this unique c
 oupling reproduces the one of an oscillator mode in open string theory. Th
 e massive spin-1 sector\, on the other hand\, includes a higher-derivative
  term that may lead to violations of causality\, which can be resolved by 
 introducing infinitely many higher-spin fields\, similar to the Regge traj
 ectories in string theory. Moreover\, we argue that this coupling is genui
 nely different from the one arising from Kaluza-Klein reductions of higher
 -dimensional supergravities\, which we show leads instead to a deformation
  of the massless supersymmetry transformations.\n
LOCATION:https://researchseminars.org/talk/AnLy/55/
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