Particle Theory Seminar: Austin Joyce (Columbia): Massive spin-2 scattering amplitudes and asymptotic superluminality

Massive spin-2 scattering amplitudes and asymptotic superluminality

“I will describe constraints imposed on theories of a massive spin-2 field by relativistic causality. Specifically, we will explore the time delay/advance experienced by a spin-2 propagating through a shockwave geometry and its calculation using eikonal scattering amplitudes. Demanding the absence of asymptotic time advances measurable in the effective theory constraints the possible cubic couplings that can be present. I will comment on extensions/generalizations and possible applications of these results.”