2015/09/10 by Clifford Cheung, Karol Kampf, Jiri Novotny +2 · 3 citations
Physics and Astronomy · #hep-th #hep-ph
paper · pdf · doi:10.1103/physrevlett.116.041601
published as Phys. Rev. Lett. 116, 041601 (2016) · 5 pages
arxiv created 2015/09/10 · arxiv updated 2016/02/03
We derive the first ever on-shell recursion relations for amplitudes in effective field theories. Based solely on factorization and the soft behavior of amplitudes, these recursion relations employ a new rescaling momentum shift to construct all tree-level scattering amplitudes in theories like the non- linear sigma model, Dirac-Born-Infeld theory, and the Galileon. Our results prove that all theories with enhanced soft behavior are on-shell constructible.