171 citations · 1.7k across the 60 of their papers we have counts for
3 papers · 2 filters
Ambitwistor strings at null infinity and subleading soft limits
Yvonne Geyer, Arthur E. Lipstein, Lionel Mason
The relationships between extended BMS symmetries at null infinity and Weinberg's soft theorems for gravitons and photons together with their subleading generalizations are develop…
Ambitwistor strings in 4-dimensions
Yvonne Geyer, Arthur E. Lipstein, Lionel J. Mason
We develop ambitwistor string theories for 4 dimensions to obtain new formulae for tree-level gauge and gravity amplitudes with arbitrary amounts of supersymmetry. Ambitwistor spac…
Lattice Gerbe Theory
Arthur E. Lipstein, Ronald A. Reid-Edwards
We formulate the theory of a 2-form gauge field on a Euclidean spacetime lattice. In this approach, the fundamental degrees of freedom live on the faces of the lattice, and the act…