Author
Adamo, T
Mason, L
Sharma, A
Journal title
Physical Review Letters
DOI
10.1103/physrevlett.125.041602
Issue
4
Volume
125
Last updated
2024-03-22T21:49:24.203+00:00
Abstract
We present all-multiplicity formulas for the tree-level scattering of gluons and gravitons in the maximal helicity violating (MHV) helicity configuration, calculated in certain chiral strong fields. The strong backgrounds we consider are self-dual plane waves in gauge theory and general relativity, which are treated exactly and admit a well-defined S matrix. The gauge theory background-coupled MHV amplitude is simply a dressed analog of the familiar Parke-Taylor formula, but the gravitational version has nontrivial new structures due to graviton tails. Both formulas have just one residual integral rather than the n-2 expected at n points from space-time perturbation theory; this simplification arises from the integrability of self-dual backgrounds and their corresponding twistor description. The resulting formulas pass several consistency checks and limit to the well-known expressions for MHV scattering of gluons and gravitons when the background becomes trivial.
Symplectic ID
1126471
Favourite
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Publication type
Journal Article
Publication date
24 Jul 2020
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