Broadhurst, David J. and Davydychev, Andrei I.
Exponential suppression with four legs and an infinity of loops.
Nuclear Physics B - Proceedings Supplements, 205-206, pp. 326–330.
The L-loop 4-point ladder diagram of massless φ3 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.
||2010 Elsevier B. V.
||Full text of the Accepted Manuscript available at arXiv via the above URL.
||Science > Physical Sciences
||18 Nov 2010 09:07
||23 Oct 2012 14:30
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