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On the Coupling of Gravitons to Matter
Z. Bern, A. De Freitas, H. L. Wong
Using relationships between open and closed strings, we present a construction of tree-level scattering amplitudes for gravitons minimally coupled to matter in terms of gauge theor…
Perturbative Relations between Gravity and Gauge Theory
Z. Bern, L. Dixon, D. C. Dunbar +2
We review the relations that have been found between multi-loop scattering amplitudes in gauge theory and gravity, and their implications for ultraviolet divergences in supergravit…
Perturbative Gravity from QCD Amplitudes
Z. Bern, A. K. Grant
We demonstrate that QCD gluon amplitudes can be used to construct a Lagrangian for gravity. This procedure makes use of perturbative `squaring' relations between gravity and gauge…
The Infrared Behavior of QCD Cross Sections at Next-to-Next-to-Leading Order
Zvi Bern, Vittorio Del Duca, William B. Kilgore +1
In this talk we examine how one-loop soft and collinear splitting functions occur in the calculation of next-to-next-to-leading order (NNLO) corrections to production rates, and we…
The Infrared Behavior of One-Loop QCD Amplitudes at Next-to-Next-to-Leading Order
Z. Bern, V. Del Duca, W. B. Kilgore +1
We present universal factorization formulas describing the behavior of one-loop QCD amplitudes as external momenta become either soft or collinear. Our results are valid to all ord…