Speaker
Max Uetrecht
(TU Dortmund University)
Description
Recently, the familiar $S$ matrix form $S=1+iT$ and crossing rules were challenged in Chern--Simons theories coupled to bosonic or fermionic matter. In the planar large-$N$ singlet channel, the proposed modifications restore unitarity by changing both the forward identity contribution and the crossing relation obeyed by the $T$ matrix. In this talk, we present a direct perturbative calculation of $2\to2$ matter scattering through order $1/k^2$ at finite $N$. We provide the first finite-$N$ perturbative verification of the conjectured forward contribution beyond the planar singlet channel, and show that it restores unitarity.
| Affiliation | TU Dortmund |
|---|---|
| Career status | PhD student |
Authors
Dr
Emmanuel Stamou
(TU Dortmund)
Enrico Di Salvo
(VUB Brussels)
Lorenzo Di Pietro
(University of Trieste)
Max Uetrecht
(TU Dortmund University)