We present an extension of the duality theorem, previously defined by S. Catani et al. on the one-loop level, to higher loop orders. The duality theorem provides a relation between loop integrals and tree-level phase-space integrals. Here, the one-loop relation is rederived in a way which is more suitable for its extension to higher loop orders. This is shown in detail by considering the two-loop N-leg master diagram and by a short discussion of the four master diagrams at three loops, in this sketching the general structure of the duality theorem at even higher loop orders.
@article{arxiv.1007.0213,
title = {Towards a Loop-Tree Duality at Two Loops and Beyond},
author = {Isabella Bierenbaum},
journal= {arXiv preprint arXiv:1007.0213},
year = {2010}
}
Comments
6 pages, talk presented at Loops and Legs in Quantum Field Theory 2010, W\"orlitz, Germany, April 25-30, 2010