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High Energy Physics - Theory · arXiv:1104.4994 v1 · submitted 26 Apr 2011

Massive Higher Spins from BRST and Tractors

Maxim Grigoriev, Andrew Waldron

The paper says

“We obtain the higher spin tractor equations of motion conjectured by Gover et al. from a BRST approach and use those methods to prove that they describe massive, partially massless and massless higher spins in conformally flat backgrounds.”

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The paper

Abstract

We obtain the higher spin tractor equations of motion conjectured by Gover et al. from a BRST approach and use those methods to prove that they describe massive, partially massless and massless higher spins in conformally flat backgrounds. The tractor description makes invariance under local choices of unit system manifest. In this approach, physical systems are described by conformal, rather than (pseudo-)Riemannian geometry. In particular masses become geometric quantities, namely the weights of tractor fields. Massive systems can therefore be handled in a unified and simple manner mimicking the gauge principle usually employed for massless models. From a holographic viewpoint, these models describe both the bulk and boundary theories in terms of conformal geometry. This is an important advance, because tying the boundary conformal structure to that of the bulk theory gives greater control over a bulk–boundary correspondence.

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abstract compiled · 2026-09-23 · no language-model review

How the main claim is stated: asserted 1.00

What the abstract itself states, as probabilities: claims first 0.07 · states limitation 0.20 · human participants 0.01 · controlled comparison 0.02 · randomized assignment 0.01 · states quantitative result 0.03 · compares with prior results 0.60 · mentions code or data availability 0.01

The abstract, sentence by sentence

This table labels the abstract only (arXiv listing abstract v1). The number is the probability the classifier gave the label.

SentenceRoleThe authors' own workStates the main conclusionStrength
We obtain the higher spin tractor equations of motion conjectured by Gover et al. from a BRST approach and use those methods to prove that they describe massive, partially massless and massless higher spins in conformally flat backgrounds. contribution 0.95 0.95 0.82 asserted 1.00
The tractor description makes invariance under local choices of unit system manifest. interpretation 0.65 0.31 0.04 asserted 1.00
In this approach, physical systems are described by conformal, rather than (pseudo-)Riemannian geometry. background 0.34 0.26 0.06 asserted 1.00
In particular masses become geometric quantities, namely the weights of tractor fields. interpretation 0.92 0.48 0.07 asserted 1.00
Massive systems can therefore be handled in a unified and simple manner mimicking the gauge principle usually employed for massless models. interpretation 0.90 0.64 0.15 asserted 0.97
From a holographic viewpoint, these models describe both the bulk and boundary theories in terms of conformal geometry. interpretation 0.90 0.52 0.11 asserted 0.99
This is an important advance, because tying the boundary conformal structure to that of the bulk theory gives greater control over a bulk--boundary correspondence. interpretation 1.00 0.34 0.15 asserted 1.00

What kind of paper the classifier reports this is: theoretical result 0.98 · evidence from proof or derivation 1.00

What was examined, and what was not

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  • arXiv listing abstract v1

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  • C citations
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How the labels were made

Compiled by classifier-1.13-20260917 via OpenRouter, question bank abstract-p1-20260923, 2026-09-23: 1 request, 5,491 input tokens, $0.0002 reported.

Every quoted sentence on this record is the authors'. Every label is from Pith's closed vocabulary, with the probability shown beside it. This record as JSON

Cited by 15 Pith papers
How the literature uses it

24 arXiv papers cite this in 40 sentences

Each citing sentence is taken from the citing paper's LaTeX source and typed by Pith's classifier. A label appears at probability 0.8 or more (0.95 for support), a contest at 0.7 or more; the quoted words are the citing authors'. How each label was checked · JSON

Papers citing it · 16 sentences without a confident label

Builds on it 1 paper
Uses its method or tool 5 papers
  • These steps are performed using the combination of various techniques: a version [ref] of the conventional ambient space formalism, parent formulation method which allows to implement ambient construction in the fiber rather than in space-time [ref] , and the approach to boundary values employing both the ambient and the parent techniques [ref] .

    Type-B Formal Higher Spin Gravity · Introduction · 1.00

  • In order to construct off–shell vertices one can use the BRST charge for massless reducible representations of the $D$–dimensional AdS group [ref] [equation] [equation] For the off–shell description of irreducible massless higher spin modes one can use the corresponding BRST charge [ref] (see also [ref] – [ref] for BRST charges which correspond to various fermionic and bosonic representations of $AdS_D$ group) which has more complicated form and includes more ghost variables than ([ref]).

    On the Structure of Quartic Vertices for Massless Higher Spin Fields on Minkowski Background · AdS Deformation · 0.94

  • The same methods can be applied in the ambient space (or tractor bundle fibre) [ref] by re-expressing symmetric tractor fields $Φ_M_1⋯M_s$ as [equation] In these terms, the tracefree condition takes the form $∂_U·∂_U Φ(x,U)=0$ .

    A Calculus for Higher Spin Interactions · On-shell higher spin tractors · 0.85

Compares with it 1 paper
Cites it as support 1 paper
Cites it as background 13 papers

What it cites · 78 sentences without a confident label

Builds on 1 paper
  • To describe an irreducible system in those cases one needs to impose extra irreducibility conditions $(Y.Z)^t Ψ=0$ where $t$ is the depth[This is a straightforward generalization [ref] to the partially massless case of the massless irreducibility condition $Y.ZΨ=0$ from [ref] .], see Section sec:parent-ads as well as the decouplesdiscussion in Section log R.

    Unified BRST description of AdS gauge fields · BRST Derivation of On-Shell Massive Higher Spins · 0.99

Compares with 3 papers
  • They agree with those of [ref] save for the two constraints involving $Div$ which could not be detected by the spin two example explicitly checked there.

    Tractors, Mass and Weyl Invariance · Tractor Equations of Motion · 0.97

  • They agree with those of [ref] save for the two constraints involving $Div$ which could not be detected by the spin two example explicitly checked there.

    Weyl Invariance and the Origins of Mass · Tractor Equations of Motion · 0.97

  • Note, however, that in contrast to the analogous BRST operator considered in [ref] , the operator [ref] is not conformally invariant because it explicitly involves the scale tractor $I$ which breaks manifest $𝔬(d,2)$-invariance down to $𝔬(d-1,2)$.

    Manifestly Conformal Descriptions and Higher Symmetries of Bosonic Singletons · Parent BRST Formulation of Tractor Fields · 0.99

Cites as background 30 papers
  • In a recent series of works [ref] , it has been pointed out that a certain mathematical calculus coming from conformal geometry called “tractor calculus” [ref] (which can be traced back to ideas of Thomas early last century [ref] , for further details see [ref] ) can be employed to make manifest the local invariance of physical theories under choices of unit systems.

    Tractors, Mass and Weyl Invariance · Introduction · 0.87

  • In a recent series of works [ref] , it has been pointed out that a certain mathematical calculus coming from conformal geometry called “tractor calculus” [ref] (which can be traced back to ideas of Thomas early last century [ref] , for further details see [ref] ) can be employed to make manifest the local invariance of physical theories under choices of unit systems.

    Standard Tractors and the Conformal Ambient Metric Construction · Introduction · 0.87

  • In a recent series of works [ref] , it has been pointed out that a certain mathematical calculus coming from conformal geometry called “tractor calculus” [ref] (which can be traced back to ideas of Thomas early last century [ref] , for further details see [ref] ) can be employed to make manifest the local invariance of physical theories under choices of unit systems.

    Weyl's Gauge Invariance: Conformal Geometry, Spinors, Supersymmetry, and Interactions · Introduction · 0.87

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