Positive helicity Einstein-Yang-Mills amplitudes from the double copy method
Dec 10, 201817 pages
Published in:
- Phys.Rev.D 99 (2019) 4, 046008
- Published: Feb 16, 2019
e-Print:
- 1812.04053 [hep-th]
Report number:
- HU-EP-18/36
View in:
Citations per year
Abstract: (APS)
All positive helicity four-point gluon-graviton amplitudes in Einstein-Yang-Mills theory coupled to a dilaton and axion field are computed at the leading one-loop order using color-kinematics duality. In particular, all relevant contributions in the gravitational and gauge coupling are established. This extends a previous generalized unitarity based computation beyond the leading terms in the gravitational coupling κ. The resulting purely rational expressions take very compact forms. The previously seen vanishing of the single-graviton-three-gluon amplitude at leading order in κ is seen to be lifted at order κ3.Note:
- 28 pages, many figures. v2: references added; v3 references added typos corrected, version to be published in PRD
- String theory, quantum gravity, gauge/gravity duality
- gravitation: coupling
- coupling: gauge
- higher-order: 1
- Einstein-Yang-Mills theory
- helicity
- duality
- dilaton
- axion
- scattering amplitude
References(65)
Figures(37)
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