Notes on a Cure for Higher-Spin Acausality

Details Notes on a Cure for Higher-Spin Acausality Notes on a Cure for Higher-Spin Acausality

2011-03-30

arxiv.org/abs/1103.6027v2

Phys.Rev.D84:045013,2011

Physics

High Energy Physics

High Energy Physics - Theory

14 pages, comments and references added, minor reorganization done. To appear in PRD

Scientific paper

10.1103/PhysRevD.84.045013

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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