Non-planar dual symmetric loop graphs and the pomeron

Abstract

Dual symmetric single loop graph amplitudes are constructed using the world sheet postulate and H. B. Nielsen's Lagrangian method. The result agrees with the sewing procedure of Bardakci, Halpern and Shapiro for planar loops and the prescription of Gallardo, Galli and Susskind for non-planar graphs. Non-planar loops possess a Pomeranchuk-like trajectory with slope 1 2α′(0). © 1970.