Publication

Towards a nonperturbative construction of the S-matrix

Francesco Riva, Brian Quinn Henning
2023
Journal Articles

Abstract

We present a nonperturbative recipe for directly computing the S-matrix in strongly-coupled QFTs. The method makes use of spectral data obtained in a Hamiltonian framework and can be applied to a wide range of theories, including potentially QCD. We demonstrate the utility of this prescription in the specific example of the 2+1d O(N) model at large N, using energy eigenstates computed with Hamiltonian truncation to reproduce the full 2 -> 2 scattering amplitude for arbitrary (complex) center-of-mass energy.

Official source

https://infoscience.epfl.ch/entities/publication/f110dabe-d0f5-4d66-bb76-da7c1afcd2b9

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Towards a nonperturbative construction of the S-matrix

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