Notes on a Cure for Higher-Spin Acausality
High Energy Physics - Theory
2011-09-08 v2
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.
Keywords
Cite
@article{arxiv.1103.6027,
title = {Notes on a Cure for Higher-Spin Acausality},
author = {Massimo Porrati and Rakibur Rahman},
journal= {arXiv preprint arXiv:1103.6027},
year = {2011}
}
Comments
14 pages, comments and references added, minor reorganization done. To appear in PRD