Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2009-07-23
JHEP10(2009)050
Physics
High Energy Physics
High Energy Physics - Theory
26 pages, 1 table; v3 some clarifications and references added, typos corrected. Published version
Scientific paper
We compute the current exchanges between triplets of higher spin fields which describe reducible representations of the Poincare group. Through this computation we can extract the propagator of the reducible higher spin fields which compose the triplet. We show how to decompose the triplet fields into irreducible HS fields which obey Fronsdal equations, and how to compute the current-current interaction for the cubic couplings which appear in ArXiv:0708.1399 [hep-th] using the decomposition into irreducible modes. We compare this result with the same computation using a gauge fixed (Feynman) version of the triplet Lagrangian which allows us to write very simple HS propagators for the triplet fields.
Fotopoulos Angelos
Tsulaia Mirian
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