Null Propagation of Partially Massless Higher Spins in (A)dS and Cosmological Constant Speculations

Details Null Propagation of Partially Massless Higher Spins in (A)dS and Cosmological Constant Speculations Null Propagation of Partially Massless Higher Spins in (A)dS and Cosmological Constant Speculations

2001-05-18

arxiv.org/abs/hep-th/0105181v2

Phys.Lett.B513:137-141,2001

Physics

High Energy Physics

High Energy Physics - Theory

10 pages, uses slashed.sty, version to appear, Phys. Lett. B

Scientific paper

10.1016/S0370-2693(01)00756-0

We show explicitly that all partially and strictly massless fields with spins s<=3 in (A)dS have null propagation. Assuming that this property holds also for s>3, we derive the mass-cosmological constant tunings required to yield all higher spin partially massless theories. As s increases, the unitarily allowed region for massive spins is squeezed around \Lambda=0, so that an infinite tower of massive particles forces vanishing \Lambda. We also speculate on the relevance of this result to string theory and supergravity in (A)dS backgrounds.

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