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Massive Higher Spins from BRST and Tractors | | Maxim Grigoriev
; Andrew Waldron
; | | Date: |
26 Apr 2011 | | 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. | | Source: | arXiv, 1104.4994 | | Services: | Forum | Review | PDF | Favorites | |
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