Diagrammar in an Extended Theory of Gravity

Abstract

We show how the $S$-matrix of an extended theory of gravity defined by its three-point amplitudes can be constructed by demanding factorisation. The resultant $S$-matrix has tree amplitudes obeying the same soft singularity theorems as Einstein gravity including the sub-sub-leading terms.

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Cited by in corpus (4)

• Scattering Amplitudes, Black Holes and Leading Singularities in Cubic Theories of Gravity
• Graviton particle statistics and coherent states from classical scattering amplitudes
• Post-Minkowskian Hamiltonians in Modified Theories of Gravity
• Loop Amplitudes in an Extended Gravity Theory