(Dis)continuities of Massless Limits in Spin 3/2-mediated Interactions and Cosmological Supergravity

Simple item page
dc.creatorDeser, S.
dc.creatorWaldron, A.
dc.date2000-12-03
dc.date2001-02-23
dc.date.accessioned2026-07-07T11:47:56Z
dc.date.available2026-07-07T11:47:56Z
dc.descriptionWe extend to its spin~3/2 supersymmetric partner the very recent demonstration that the massless limit of massive spin~2 exchange amplitudes can be made continuous in background AdS spaces, in contrast to the known flat space discontinuities for both systems. In an AdS background, unlike spin~2 where the limit m\to0 is the massless one, spin~3/2 ``masslessness'' requires m\to\sqrt{-Λ/3}, the supergravity value tuning the mass and cosmological constant that uniquely provides gauge invariance and two helicities. We find that continuity of the spin~3/2--mediated exchange amplitude can be regained in two ``massless'' limits m\to0 and m\to\sqrt{-Λ/3}; only the latter corresponds to cosmological supergravity.
dc.description12 pages, LaTeX
dc.identifierhttps://arxiv.org/abs/hep-th/0012014
dc.identifierhttp://arxiv.org/abs/hep-th/0012014
dc.identifierPhys.Lett.B501:134-139,2001
dc.identifierdoi:10.1016/S0370-2693(01)00109-5
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/202752
dc.subjectHigh Energy Physics - Theory
dc.subjectGeneral Relativity and Quantum Cosmology
dc.subjectHigh Energy Physics - Phenomenology
dc.title(Dis)continuities of Massless Limits in Spin 3/2-mediated Interactions and Cosmological Supergravity
dc.typetext

Files

Collections

arXiv