Graviton Scattering Made Simple(r)

6th International Symposium on Quantum Theory and Symmetries

Spradlin, Marcus^1

Department of Physics, Brown University, Box 1843, Providence, RI 02912, United States^1

关键词: Hidden structures;    Recursion relations;    Scattering amplitudes;    Tree level;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/462/1/012049/pdf
DOI  :  10.1088/1742-6596/462/1/012049

来源: IOP

【 摘 要 】

I summarize a few recent developments in unlocking the hidden structure of graviton scattering amplitudes. In particular: (1) I show how the 'bonus relations' for graviton amplitudes may be used to provide simple analytic proofs of the equivalence of various distinct formulas for the n-graviton MHV amplitude which have appeared in the literature (and, in particular, providing a direct proof of the original BGK formula); (2) review the 'tree formula' for MHV graviton scattering, which has several nice properties including the fact that it manifests both Sn-2symmetry as well as 1/z2falloff at large z; and (3) comment on the solution of the on-shell recursion relation for arbitrary tree-level graviton amplitudes.