Arbitrary spin representations in de Sitter from dS/CFT with applications to dS supergravity

Deser, S.; Waldron, Andrew

doi:10.1016/s0550-3213(03)00348-1

Cited by 97 publications

(121 citation statements)

References 31 publications

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“…Performing the same analysis for a field with arbitrary spin s > 2, we find the following mixing Lagrangian 25) where…”

Section: Jhep12(2016)040mentioning

confidence: 87%

“…For massive fields with spin greater than 2, the action is rather complex and requires introducing auxiliary fields of lower spins. An alternative, which we will follow, is to use a group theoretical approach to find the equations of motion directly [25]. A massive bosonic spin-s field is described by a totally symmetric rank-s tensor, σ µ 1 ···µs , subject to the constraints…”

Section: Jhep12(2016)040mentioning

confidence: 99%

“…18 When the approximate conformal invariance is valid, we can think of this in terms of correlation functions of the inflaton Φ(t, x) = φ(t) + ϕ(t, x), whereφ = 0 characterizes the weak breaking of conformal symmetry. The leading three-point function for the inflaton perturbation ϕ will be given by the four-point function of Φ with one external leg set toφ: 25) where · · · inf denotes an inflationary correlation function which breaks conformal symmetry [55]. However, in the conformally symmetric case, ϕϕσ vanishes when σ has odd spin [56].…”

Section: Jhep12(2016)040mentioning

confidence: 99%

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Non-Gaussianity as a particle detector

Lee

Baumann

Pimentel

2016

J. High Energ. Phys.

251

370

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Abstract:We study the imprints of massive particles with spin on cosmological correlators. Using the framework of the effective field theory of inflation, we classify the couplings of these particles to the Goldstone boson of broken time translations and the graviton. We show that it is possible to generate observable non-Gaussianity within the regime of validity of the effective theory, as long as the masses of the particles are close to the Hubble scale and their interactions break the approximate conformal symmetry of the inflationary background. We derive explicit shape functions for the scalar and tensor bispectra that can serve as templates for future observational searches.

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“…Performing the same analysis for a field with arbitrary spin s > 2, we find the following mixing Lagrangian 25) where…”

Section: Jhep12(2016)040mentioning

confidence: 87%

Section: Jhep12(2016)040mentioning

confidence: 99%

Section: Jhep12(2016)040mentioning

confidence: 99%

See 1 more Smart Citation

Non-Gaussianity as a particle detector

Lee

Baumann

Pimentel

2016

J. High Energ. Phys.

251

370

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“…[For conserved J , the trA divJ term is moot at tree level but can play a rôle in loops which we mostly ignore in this work. 5 ] A quick computation reveals…”

Section: Couplingsmentioning

confidence: 99%

Partially massless spin-2 electrodynamics

Deser

Waldron

2006

Phys. Rev. D

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Maximal depth, partially massless, higher spin excitations can mediate charged matter interactions in a de Sitter universe. This result is motivated by similarities between these theories and their traditional Maxwell counterpart: their propagation is lightlike and corresponds to the same Laplacian eigenmodes as the de Sitter photon; they are conformal in four dimensions; their gauge invariance has a single scalar parameter and actions can be expressed as squares of single derivative curvature tensors. We study this effect in detail for its simplest spin 2 example: It is possible to construct a natural and consistent interaction scheme with conserved vector electromagnetic currents primarily coupled to the helicity 1 partially massless modes. The resulting current-current single ''partial-photon'' exchange amplitude is the (very unCoulombic) sum of contact and shorter-range terms, so the partial photon cannot replace the traditional one, but rather modifies short range electromagnetic interactions. We also write the gauge invariant fourth-derivative effective actions that might appear as effective corrections to the model, and give their contributions to the tree amplitude.

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“…The better understanding of this underlying theory can provide clues about String/M theory and (A)dS/CFT correspondence [1,2,3,4,5,6].…”

Section: Introductionmentioning

confidence: 99%

Superspace Formulation of Arbitrary Superspin Reps of the 4D, N=1 Super-Poincare Group

Koutrolikos¹

2015

Proceedings of Proceedings of the Corfu Summer Institute 2014 — PoS(CORFU2014)

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Higher Super-Spins, are the irreducible representations of the Super-Poincaré group. We study the representation theory of this group in 4D, N = 1 and demonstrate the off-shell Superspace realization of these theories. On the one hand, for the massless case, using gauge symmetry as a guide we can describe the arbitrary (integer or half-integer) superhelicity system. On the other hand for the massive case the general superspin case is still an open problem. However we would like to report on some recent progress towards that direction. We complete the picture by presenting various aspects of the Higher Super-Spin theories, such as the off-shell spectrum and degrees of freedom for the arbitrary superhelicity and how to construct N = 2 theories out of the N = 1 theories.

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Arbitrary spin representations in de Sitter from dS/CFT with applications to dS supergravity

Cited by 97 publications

References 31 publications

Non-Gaussianity as a particle detector

Non-Gaussianity as a particle detector

Partially massless spin-2 electrodynamics

Superspace Formulation of Arbitrary Superspin Reps of the 4D, N=1 Super-Poincare Group

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