Interacting massless infraparticles in 1+1 dimensions
arXiv:2109.02128 · doi:10.1007/s00220-022-04451-5
Abstract
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 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.
14 pages