Massless Wigner particles in conformal field theory are free
arXiv:1310.4744 · doi:10.1017/fms.2014.16
Abstract
We show that in a four dimensional conformal Haag-Kastler net, its massless particle spectrum is generated by a free field subnet. If the massless particle spectrum is scalar, then the free field subnet decouples as a tensor product component.
25 pages, 3 Tikz figures. The final version is available under Open Access