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Multi-Leg One-Loop Gravity Amplitudes from Gauge Theory
Z. Bern, L. Dixon, M. Perelstein +1
By exploiting relations between gravity and gauge theories, we present two infinite sequences of one-loop n-graviton scattering amplitudes: the `maximally helicity-violating' ampli…
The Infrared Behavior of One-Loop Gluon Amplitudes at Next-to-Next-to-Leading Order
Zvi Bern, Vittorio Del Duca, Carl R. Schmidt
For the case of -jet production at next-to-next-to-leading order in the QCD coupling, in the infrared divergent corners of phase space where particles are collinear or soft, one…
Perturbative Relationships Between QCD and Gravity and Some Implications
Z. Bern, L. Dixon, D. C. Dunbar +2
We discuss nontrivial examples illustrating that perturbative gravity is in some sense the `square' of gauge theory. This statement can be made precise at tree-level using the Kawa…
One-Loop n-Point Helicity Amplitudes in (Self-Dual) Gravity
Z. Bern, L. Dixon, M. Perelstein +1
We present an ansatz for all one-loop amplitudes in pure Einstein gravity for which the n external gravitons have the same outgoing helicity. These loop amplitudes, which are ratio…
Multi-Parton Loop Amplitudes and Next-to-Leading Order Jet Cross-Sections
Z. Bern, L. Dixon, D. A. Kosower +1
We review recent developments in the calculation of QCD loop amplitudes with several external legs, and their application to next-to-leading order jet production cross-sections. Wh…
On the Relationship between Yang-Mills Theory and Gravity and its Implication for Ultraviolet Divergences
Z. Bern, L. Dixon, D. C. Dunbar +2
String theory implies that field theories containing gravity are in a certain sense `products' of gauge theories. We make this product structure explicit up to two loops for the re…