Artículos de revistas
The S-matrix bootstrap II: two dimensional amplitudes
Fecha
2017-11-01Registro en:
Journal of High Energy Physics, v. 2017, n. 11, 2017.
1029-8479
1126-6708
10.1007/JHEP11(2017)143
2-s2.0-85036669383
2-s2.0-85036669383.pdf
Autor
CERN
École Polytechnique Fédérale de Lausanne
Faculdade de Ciências da Universidade do Porto
Perimeter Institute for Theoretical Physics
Durham University
Universidade Estadual Paulista (Unesp)
Institución
Resumen
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.