On interactions of higher spin fields with gravity and branes in AdS_5

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dc.creatorGermani, Cristiano
dc.creatorSchelpe, Arabella
dc.date2007-12-14
dc.date2008-06-20
dc.date.accessioned2026-07-07T11:54:39Z
dc.date.available2026-07-07T11:54:39Z
dc.descriptionWe construct actions of higher spin fields interacting with gravity on AdS_5 backgrounds such that the Compton scattering amplitudes of the interaction are tree-level unitary. We then consider higher-spin fields in the Randall-Sundrum scenario. There, in the fermionic case, we construct a tree-level unitary action of higher spin fields interacting with branes and linearised gravity. In the bosonic case we show that this is not in general possible. A tree-level unitary action of bosonic higher spins interacting with linearised gravity and branes is only possible in the following cases: The brane is a pure tension brane and/or Dirichlet boundary conditions are imposed thereby making bosonic higher spin fields invisible to a brane observer. We finally show that higher spins in Randall-Sundrum II braneworlds can only be produced by (decay into) gravitons at trans-Planckian scales. We end by commenting on the possible relevance of higher-spin unparticles as Dark Matter candidates.
dc.description13 pages; RevTex; v3: clarifications and references added, version accepted for publication in Phys. Rev. D (2008)
dc.identifierhttps://arxiv.org/abs/0712.2243
dc.identifierhttp://arxiv.org/abs/0712.2243
dc.identifierPhys.Rev.D78:036010,2008
dc.identifierdoi:10.1103/PhysRevD.78.036010
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/204980
dc.subjectHigh Energy Physics - Theory
dc.subjectAstrophysics
dc.subjectGeneral Relativity and Quantum Cosmology
dc.subjectHigh Energy Physics - Phenomenology
dc.titleOn interactions of higher spin fields with gravity and branes in AdS_5
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