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SUMMARY:Constraints from Consistency: Implications for a Massive Spin-$3/2
 $ Field
DTSTART:20260430T090000Z
DTEND:20260430T100000Z
DTSTAMP:20260503T180500Z
UID:indico-event-9333@scitalks.tifr.res.in
DESCRIPTION:Speakers: Diptimoy Ghosh (IISER Pune)\n\nConsistency principle
 s—relativity\, quantum mechanics\, unitarity\, and analyticity—place s
 trong constraints on how particle interactions can be organized. Rather t
 han allowing arbitrary possibilities\, these basic requirements significa
 ntly narrow the space of viable theories and often enforce nontrivial rela
 tions among seemingly independent couplings.Focusing on a massive spin-$3
 /2$ field\, these constraints become particularly restrictive. Using dispe
 rsive bounds on non-forward $2 \\to 2$ scattering amplitudes\, the allowed
  space of effective couplings can be mapped explicitly. For masses well b
 elow the Planck scale\, this space forms a bounded region whose boundary 
 includes the supergravity point\, with a volume that shrinks parametricall
 y as $(m/M_{\\rm Pl})^6$ and vanishes smoothly in the massless limit.\nThi
 s provides a concrete setting in which general consistency conditions shar
 ply constrain the structure of the low-energy theory.\n\nhttps://scitalks
 .tifr.res.in/event/9333/
LOCATION:A304 and on Zoom
URL:https://scitalks.tifr.res.in/event/9333/
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