No particle production in two dimensions: recursion relations and multi-Regge limit
No particle production in two dimensions: recursion relations and multi-Regge limit
A bstract We introduce high-energy limits which allow us to derive recursion relations fixing the various couplings of Lagrangians of two-dimensional relativistic quantum field theories with no tree-level particle production in a very straightforward way. The sine-Gordon model, the Bullough-Dodd theory, Toda theories of various kinds and the U( N …