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arXiv · 1103.6027

Notes on a Cure for Higher-Spin Acausality

Massimo Porrati·Rakibur Rahman
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Abstract

We present a Lagrangian describing a massive charged spin-2 field and a scalar in a constant electromagnetic background, and we provide a consistent description of the system. The Lagrangian, derived from string field theory through a suitable dimensional reduction, propagates the correct number of degrees of freedom within the light cone in any space-time dimension less than 26. We briefly discuss the higher-spin generalization of this construction, that cures the pathologies of a massive charged particle of arbitrary integer spin by introducing only finitely many new massive degrees of freedom.

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Massimo Porrati, Rakibur Rahman. 2011-08-05. Notes on a Cure for Higher-Spin Acausality. https://doi.org/10.1103/physrevd.84.045013

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