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Creators/Authors contains: "Riva, Francesco"

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  1. ; ; ; ; (, Journal of High Energy Physics)
    A bstract 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. 
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