The S-matrix bootstrap II: two dimensional amplitudes
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Resumo
We consider constraints on the S-matrix of any gapped, Lorentz invariant quantum field theory in 1 + 1 dimensions due to crossing symmetry and unitarity. In this way we establish rigorous bounds on the cubic couplings of a given theory with a fixed mass spectrum. In special cases we identify interesting integrable theories saturating these bounds. Our analytic bounds match precisely with numerical bounds obtained in a companion paper where we consider massive QFT in an AdS box and study boundary correlators using the technology of the conformal bootstrap.
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Field Theories in Lower Dimensions, Integrable Field Theories, Scattering Amplitudes
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Inglês
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Journal of High Energy Physics, v. 2017, n. 11, 2017.
