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Perfecting one-loop...
Perfecting one-loop BCJ numerators in SYM and supergravity
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- Edison, Alex (author)
- Uppsala universitet,Teoretisk fysik,Northwestern Univ, Dept Phys & Astron, Evanston, IL 60208 USA.;Univ Calif Santa Barbara, Kavli Inst Theoret Phys, Santa Barbara, CA 93106 USA.
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- He, Song (author)
- Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China.;UCAS, Hangzhou Inst Adv Study, Sch Fundamental Phys & Math Sci, Hangzhou 310024, Peoples R China.;UCAS, ICTP AP, Hangzhou 310024, Peoples R China.
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- Johansson, Henrik (author)
- Uppsala universitet,Stockholms universitet,Nordiska institutet för teoretisk fysik (Nordita),Uppsala Univ, Dept Phys & Astron, Box 516, S-75120 Uppsala, Sweden.;Univ Calif Santa Barbara, Kavli Inst Theoret Phys, Santa Barbara, CA 93106 USA.;Stockholm Univ, Nordita SU, Hannes Alfvens vag 12, S-10691 Stockholm, Sweden.,Teoretisk fysik,Univ Calif Santa Barbara, Kavli Inst Theoret Phys, Santa Barbara, CA 93106 USA.;Stockholm Univ, Nordita, Hannes Alfvens vag 12, S-10691 Stockholm, Sweden.;KTH Royal Inst Technol, Hannes Alfvens vag 12, S-10691 Stockholm, Sweden.
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- Schlotterer, Oliver (author)
- Uppsala universitet,Teoretisk fysik,Univ Calif Santa Barbara, Kavli Inst Theoret Phys, Santa Barbara, CA 93106 USA.
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- Teng, Fei (author)
- Univ Calif Santa Barbara, Kavli Inst Theoret Phys, Santa Barbara, CA 93106 USA.;Penn State Univ, Inst Gravitat & Cosmos, University Pk, PA 16802 USA.
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- Zhang, Yong (author)
- Perimeter Inst Theoret Phys, Waterloo, ON N2L 2Y5, Canada.
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(creator_code:org_t)
- Springer Nature, 2023
- 2023
- English.
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In: Journal of High Energy Physics (JHEP). - : Springer Nature. - 1126-6708 .- 1029-8479. ; :2
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Abstract
Subject headings
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- We take a major step towards computing D-dimensional one-loop amplitudes in general gauge theories, compatible with the principles of unitarity and the color-kinematics duality. For n-point amplitudes with either supersymmetry multiplets or generic non-supersymmetric matter in the loop, simple all-multiplicity expressions are obtained for the maximal cuts of kinematic numerators of n-gon diagrams. At n = 6, 7 points with maximal supersymmetry, we extend the cubic-diagram numerators to encode all contact terms, and thus solve the long-standing problem of simultaneously realizing the following properties: color-kinematics duality, manifest locality, optimal power counting of loop momenta, quadratic rather than linearized Feynman propagators, compatibility with double copy as well as all graph symmetries. Color-kinematics dual representations with similar properties are presented in the half-maximally supersymmetric case at n = 4, 5 points. The resulting gauge-theory integrands and their supergravity counterparts obtained from the double copy are checked to reproduce the expected ultraviolet divergences.
Subject headings
- NATURVETENSKAP -- Fysik -- Subatomär fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Subatomic Physics (hsv//eng)
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Keyword
- Scattering Amplitudes
- Extended Supersymmetry
- Supergravity Models
Publication and Content Type
- ref (subject category)
- art (subject category)
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