A proceedings summary arguing that the massless limit of massive Yang-Mills is smooth via a Vainshtein-like mechanism, and that self-interactions make Proca and Kalb-Ramond strong-coupling behaviors differ, questioning their duality.
Non-minimally coupled vector curvaton
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abstract
It is shown that a massive Abelian vector boson field can generate the curvature perturbation in the Universe, when coupled non-minimally to gravity, through an RA^2 coupling. The vector boson acts as a curvaton field imposing the curvature perturbation after the end of inflation, without generating a large-scale anisotropy. The parameter space of the model is fully explored, obtaining the relevant bounds on the inflation scale and the decay constant of the vector curvaton.
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Aspects of massive gauge fields
A proceedings summary arguing that the massless limit of massive Yang-Mills is smooth via a Vainshtein-like mechanism, and that self-interactions make Proca and Kalb-Ramond strong-coupling behaviors differ, questioning their duality.