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Color-kinematics duality in Yang-Mills theory from string amplitudes

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I will review the duality between color and kinematics in gauge theories—a striking resemblance between the color- and polarization- or momenta dependent parts of Yang Mills (YM) amplitudes. As a key benefit, it severely facilitates the construction of gravity amplitudes from gauge theory. However, manifestation of the duality requires a very particular arrangement of quartic vertices among cubic diagrams which could not yet be systematized within the field theory setup. In this talk, I will provide examples at tree level (based on 1104.5224) and at one-loop (work in progress) how the field theory limit of superstring amplitudes naturally leads to duality-satisfying representations of YM amplitudes.

This talk is part of the Quantum Fields and Strings Seminars series.

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