Theory Seminars

Continuous Spin Particles, On-Shell

by Dr Brando Bellazzini

Europe/Madrid
Description

Continuous spin particles are massless irreducible representations of the Poincare’ group, with a non-vanishing Pauli-Lubanski casimir operator. They differ from ordinary massless particles as carrying infinitely many helicities, for any given 4-momentum.  We discuss how to construct on-shell 3- and 4-point scattering amplitudes involving continuous spin particles that are well-behaved in the high energy limit. We discuss their main features and constrast their properties with ordinary massless particles. 

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