Outputs (43)

Recursion relations for anomalous dimensions in the 6d (2, 0) theory (2019)
Journal Article

We derive recursion relations for the anomalous dimensions of double-trace operators occurring in the conformal block expansion of four-point stress tensor correlators in the 6d (2, 0) theory, which encode higher-derivative corrections to supergravit... Read More about Recursion relations for anomalous dimensions in the 6d (2, 0) theory.

Double copy structure of CFT correlators (2019)
Journal Article

We consider the momentum-space 3-point correlators of currents, stress tensors and marginal scalar operators in general odd-dimensional conformal field theories. We show that the flat space limit of these correlators is spanned by gauge and gravitati... Read More about Double copy structure of CFT correlators.

New worldsheet formulae for conformal supergravity amplitudes (2018)
Journal Article

We use 4d ambitwistor string theory to derive new worldsheet formulae for tree-level conformal supergravity amplitudes supported on refined scattering equations. Unlike the worldsheet formulae for super-Yang-Mills or supergravity, the scattering equa... Read More about New worldsheet formulae for conformal supergravity amplitudes.

3d N=4 Super-Yang-Mills on a Lattice (2018)
Journal Article

In this paper we explore a new approach to studying three-dimensional N=4 super-Yang-Mills on a lattice. Our strategy is to complexify the Donaldson-Witten twist of four-dimensional N=2 super-Yang-Mills to make it amenable to a lattice formulation an... Read More about 3d N=4 Super-Yang-Mills on a Lattice.

M-theory beyond the supergravity approximation (2018)
Journal Article

We analyze the four-point function of stress-tensor multiplets for the 6d quantum field theory with OSp(8∗|4) symmetry which is conjectured to be dual to M-theory on AdS7 × S4, and deduce the leading correction to the tree-level supergravity predicti... Read More about M-theory beyond the supergravity approximation.

From 4d ambitwistor strings to on shell diagrams and back (2017)
Journal Article

We investigate the relation between 4d ambitwistor string theory and on-shell diagrams for planar N = 4 super-Yang-Mills and N = 8 supergravity, and deduce several new results about their scattering amplitudes at tree-level and 1-loop. In particular,... Read More about From 4d ambitwistor strings to on shell diagrams and back.

6d dual conformal symmetry and minimal volumes in AdS (2016)
Journal Article

The S-matrix of a theory often exhibits symmetries which are not manifest from the viewpoint of its Lagrangian. For instance, powerful constraints on scattering amplitudes are imposed by the dual conformal symmetry of planar 4d N=4N=4 super Yang-Mill... Read More about 6d dual conformal symmetry and minimal volumes in AdS.

On-shell diagrams for N = 8 supergravity amplitudes (2016)
Journal Article
Heslop, P., & Lipstein, A. E. (2016). On-shell diagrams for N = 8 supergravity amplitudes. Journal of High Energy Physics, 2016(06), Article 069. https://doi.org/10.1007/jhep06%282016%29069

We define recursion relations for N = 8 supergravity amplitudes using a generalization of the on-shell diagrams developed for planar N = 4 super-Yang-Mills. Although the recursion relations generically give rise to non-planar on-shell diagrams, we sh... Read More about On-shell diagrams for N = 8 supergravity amplitudes.

Soft Theorems from Conformal Field Theory (2015)
Journal Article

Strominger and collaborators recently proposed that soft theorems for gauge and gravity amplitudes can be interpreted as Ward identities of a 2d CFT at null infinity. In this paper, we will consider a specific realization of this CFT known as ambitwi... Read More about Soft Theorems from Conformal Field Theory.

Ambitwistor strings at null infinity and (subleading) soft limits (2015)
Journal Article

The relationship between BMS symmetries at null infinity and Weinberg's soft theorems for gravitons and photons together with their subleading extensions are developed using ambitwistor string theory. Ambitwistor space is the phase space of complex n... Read More about Ambitwistor strings at null infinity and (subleading) soft limits.