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arXiv · 1601.04634

Loop-tree duality and quantum field theory in four dimensions

German F. R. Sborlini
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Abstract

Loop-tree duality allows to express virtual contributions in terms of phase-space integrals, thus leading to a direct comparison with real radiation terms. In this talk, we review the basis of the method and describe its application to regularize Feynman integrals. Performing an integrand-level combination of real and virtual terms, we obtain finite contributions that can be computed in four-dimensions. Moreover, this method provides a natural physical interpretation of infrared singularities, their origin and the way that they cancel in the complete computation.

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German F. R. Sborlini. 2016-01-18. Loop-tree duality and quantum field theory in four dimensions. https://arxiv.org/abs/1601.04634

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