We propose a dual formulation for the S Matrix of\(\mathcal N\)= 4 SYM. The dual provides a
basis for the “leading singularities” of scattering amplitudes to all orders in perturbation …

Ward identities of SUSY and R-symmetry relate n-point amplitudes in supersymmetric
theories. We review recent work in which these Ward identities are solved in SYM and …

The marvelous simplicity and remarkable hidden symmetries recently uncovered in (Super)
Yang-Mills and (Super) Gravity scattering amplitudes strongly suggests the existence of a …

We present and prove a formula for the MHV scattering amplitude of n gravitons at tree level.
Some of the more interesting features of t he formula, which set it apart as being significantly …

We present a simple systematic method to study candidate counterterms in\(\mathcal {N}=
8\) supergravity. Complicated details of the counterterm operators are avoided because we …

A bstract We study\(\mathcal {N}={8}\) supergravity deformed by the presence of the
candidate counterterms. We show that even though they are invariant under undeformed E 7 …

The coefficient of a potential\({\mathcal {R}^ 4}\) counterterm in\(\mathcal {N}= 8\)
supergravity has been shown previously to vanish in an explicit three-loop calculation …

We present an algorithm for writing down explicit formulas for all tree amplitudes in N= 8
supergravity, obtained from solving the supersymmetric on-shell recursion relations. The …

It was recently proposed that the leading singularities of the S-Matrix of\(\mathcal N\)= 4
super Yang-Mills theory arise as the residues of a contour integral over a Grassmannian …

The UV finiteness found in calculations of the 4‐point amplitude in supergravity at loop order
has not been explained, which motivates our study of the relevant superspace invariants …