Diagrammar in an Extended Theory of Gravity
classification
✦ hep-th
keywords
gravityamplitudesextendedmatrixtheoryconstructeddefineddemanding
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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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