# Covariant representation theory of the Poincaré algebra and some of its extensions

@article{Boels2009CovariantRT, title={Covariant representation theory of the Poincar{\'e} algebra and some of its extensions}, author={Rutger H. Boels}, journal={Journal of High Energy Physics}, year={2009}, volume={2010}, pages={1-46} }

There has been substantial calculational progress in the last few years for gauge theory amplitudes which involve massless four dimensional particles. One of the central ingredients in this has been the ability to keep precise track of the Poincaré algebra quantum numbers of the particles involved. Technically, this is most easily done using the well-known four dimensional spinor helicity method. In this article a natural generalization to all dimensions higher than four is obtained based on a…

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