# Interacting massless infraparticles in 1+1 dimensions

September 05, 2021

The Buchholz' scattering theory of waves in two dimensional massless models
suggests a natural definition of a scattering amplitude. We compute such a
scattering amplitude for charged infraparticles that live in the GNS
representation of the 2$d$ massless scalar free field and obtain a non-trivial
result. It turns out that these excitations exchange phases, depending on their
charges, when they collide.

Keywords:

*none*