Heidelberg 2022 – scientific programme

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MP: Fachverband Theoretische und Mathematische Grundlagen der Physik

MP 7: Quantum field theory

MP 7.2: Talk

Wednesday, March 23, 2022, 17:05–17:25, MP-H5

Interacting massless infraparticles in 1+1 dimensions — •Wojciech Dybalski¹ and Jens Mund² — ¹AMU Poznań — ²Universidade Federal de Juiz de Fora - UFJF

The Buchholz' scattering theory of waves in two dimensional massless models suggests a natural definition of a scattering amplitude. We computed such a scattering amplitude for charged infraparticles that live in the GNS representation of the 2d massless scalar free field and obtained a non-trivial result. It turns out that these excitations exchange phases, depending on their charges, when they collide. Perspectives for obtaining a similar effect in higher dimensions will also be discussed.