Hepatitis B Vaccination Measure

Wit, John de; Vet, Raymond; Schutten, M.; Steenbergen, Jim van

doi:10.1037/t16926-000

Cited by 8 publications

(13 citation statements)

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“…The powers of M w appearing here are set by dimensional analysis, so the constants c i are dimensionless. These effective interactions might also include terms having no more derivatives than appear in the classical action, but higher powers of the dilaton such as can arise in string theory through higher string loops [34,35,36,37].…”

Section: Uv-sensitive Contributionsmentioning

confidence: 99%

Towards a naturally small cosmological constant from branes in 6D supergravity

Aghababaie¹,

Burgess²,

et al. 2004

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We investigate the possibility of self-tuning of the effective 4D cosmological constant in 6D supergravity, to see whether it could naturally be of order 1/r 4 when compactified on two dimensions having Kaluza-Klein masses of order 1/r. In the models we examine supersymmetry is broken by the presence of nonsupersymmetric 3-branes (on one of which we live). If r were sub-millimeter in size, such a cosmological constant could describe the recently-discovered dark energy. A successful self-tuning mechanism would therefore predict a connection between the observed size of the cosmological constant, and potentially observable effects in submillimeter tests of gravity and at the Large Hadron Collider. We do find self tuning inasmuch as 3-branes can quite generically remain classically flat regardless of the size of their tensions, due to an automatic cancellation with the curvature and dilaton of the transverse two dimensions. We argue that in some circumstances six-dimensional supersymmetry might help suppress quantum corrections to this cancellation down to the bulk supersymmetry-breaking scale, which is of order 1/r. We finally examine an explicit realization of the mechanism, in which 3-branes are inserted into an anomaly-free version of Salam-Sezgin gauged 6D supergravity compactified on a 2sphere with nonzero magnetic flux. This realization is only partially successful due to a topological constraint which relates bulk couplings to the brane tension, although we give arguments why these relations may be stable against quantum corrections.

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Section: Uv-sensitive Contributionsmentioning

confidence: 99%

Towards a naturally small cosmological constant from branes in 6D supergravity

Aghababaie¹,

Burgess²,

et al. 2004

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“…Here we give some basic definitions concerning D dimensional Anti de Sitter space. More detailed treatment can be found in [17] or in reviews [18].…”

Section: Fields On Adsmentioning

confidence: 99%

Lagrangian formulation of higher spin theories on AdS space

2006

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“…String theory is a candidate for the description of quantum gravity, its spectrum contains an infinite number of massive self-interacting higher-spin particles. It is then natural to search for higher-spin extensions of general relativity and NMG, taking advantage of the geometrical formulation provided by de Wit and Freedman [5] and by Deser and Damour [6]. In this sense some progress has been reached in the spin-3 and spin-4 cases [7,8,9,10,11].…”

Section: Introductionmentioning

confidence: 99%

Unitarity of higher derivative spin-3 models

Mendonça

Bittencourt

2020

Annals of Physics

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The fourth order in derivatives New Massive Gravity model NMG, describes a massive spin-2 particle in D = 2+1. At the linearized level a proof of unitarity necessarily implies that the generalization to higher dimensions includes non-unitary massless spin-2 modes. The linearized version of NMG is dual to the Fierz-Pauli model FP. Here we examine the unitarity of higher derivative spin-3 models, analogues to the NMG, dual to the Singh-Hagen model SH. We find that the same kind of restriction on the dimension of the space also happens in this case, and the models are physical only in D = 2 + 1.

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Hepatitis B Vaccination Measure

Cited by 8 publications

References 0 publications

Towards a naturally small cosmological constant from branes in 6D supergravity

Towards a naturally small cosmological constant from branes in 6D supergravity

Lagrangian formulation of higher spin theories on AdS space

Unitarity of higher derivative spin-3 models

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