Loop amplitudes in gauge theories: modern analytic approaches

Q: What does this research mean for the field?

On-shell methods, particularly those based on unitarity cuts, provide highly effective analytic approaches for computing one-loop amplitudes in massless gauge theories such as Yang-Mills, QCD, and QED. Novelty: ClaimNovelty.SYNTHESIS. Consensus alignment: ConsensusAlignment.NEUTRAL.

Ruth Britto

doi:10.1088/1751-8113/44/45/454006

October 20, 2011Journal of Physics A Mathematical and TheoreticalOpen Access

Loop amplitudes in gauge theories: modern analytic approaches

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Abstract

This article reviews on-shell methods for analytic computation of loop amplitudes, emphasizing techniques based on unitarity cuts. Unitarity techniques are formulated generally but have been especially useful for calculating one-loop amplitudes in massless theories such as Yang-Mills theory, QCD, and QED.

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Ruth Britto (2011) studied this question.

synapsesocial.com/papers/6a0dcd43cecdf5fb20ba9c49 https://doi.org/10.1088/1751-8113/44/45/454006

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Loop amplitudes in gauge theories: modern analytic approaches

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Loop amplitudes in gauge theories: modern analytic approaches

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