标题： 四条腿和无穷多圈的指数抑制 显示英文标题

标题： Exponential suppression with four legs and an infinity of loops

摘要： 无质量的 φ³ 理论的 L 环 4 点梯子图在所有 4 条腿都离壳时是有限的，并且可以用阶数从 L 到 2L 的多对数来表示。我们得到了求解这些梯子图的线性 Dyson-Schwinger 方程的精确解，并表明在强耦合下这个和以指数速度消失。 显示英文摘要

摘要： The L-loop 4-point ladder diagram of massless phi^3 theory is finite when all 4 legs are off-shell and is given in terms of polylogarithms with orders ranging from L to 2L. We obtain the exact solution of the linear Dyson-Schwinger equation that sums these ladder diagrams and show that this sum vanishes exponentially fast at strong coupling.