Massless Wigner particles in conformal field theory are free

Abstract

We show that the massless particle spectrum in a four-dimensional conformal Haag–Kastler net 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.

Keywords

• 81T05 (primary)
• 81T40
• 81U99 (secondary)