Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2010-03-08
Physics
High Energy Physics
High Energy Physics - Theory
43 pages, 3 figures; typos corrected, a few points clarified.
Scientific paper
Recently, Bern, Carrasco and Johansson conjectured dual identities inside the gluon tree scattering amplitudes. In this paper, we use the properties of the heterotic string and open string tree scattering amplitudes to refine and derive these dual identities. These identities can be carried over to loop amplitudes using the unitarity method. Furthermore, given the $M$-gluon (as well as gluon-gluino) tree amplitudes, $M$-graviton (as well as graviton-gravitino) tree scattering amplitudes can be written down immediately, avoiding the derivation of Feynman rules and the evaluation of Feynman diagrams for graviton scattering amplitudes.
Tye Henry
Zhang Yang
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