Subsubleading soft graviton symmetry and MHV graviton scattering amplitudes
Shamik Banerjee, Sudip Ghosh, Sai Satyam Samal
TL;DR
This paper explores the role of subsubleading soft graviton theorems in understanding symmetries and scattering amplitudes in graviton physics, building on prior work linking soft theorems to symmetries.
Contribution
It clarifies how subsubleading soft graviton theorems contribute to the symmetry structure and amplitude calculations in graviton scattering.
Findings
Subsubleading soft graviton theorem plays a crucial role in symmetry analysis.
Tree-level MHV graviton amplitudes are determined by soft theorems.
Enhanced symmetry structures are connected to subsubleading soft theorems.
Abstract
In arXiv:2008.04330 it was shown that supertranslation and current algebra symmetries, corresponding to leading and subleading soft graviton theorems, are enough to determine the tree level MHV graviton scattering amplitudes. In this note we clarify the role of subsubleading soft graviton theorem in this context.
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