7 papers
Twisting Twistor space
Tim Meier, Eggon Viana
We construct twisted noncommutative gauge theories on twistor space and show that they are equivalent to four-dimensional twist-noncommutative gauge theories. In particular, we stu…
The 11D pure spinor ghost number zero vertex operator
Max Guillen, Marcelo dos Santos, Eggon Viana
The 11D pure spinor worldline has been proved to successfully describe the physical states of 11D supergravity in a manifestly super-Poincaré covariant fashion. Within this framew…
Tree-level 11D supergravity amplitudes from the pure spinor worldline
Max Guillen, Marcelo dos Santos, Eggon Viana
We develop a pure spinor worldline formalism for computing tree-level scattering amplitudes in 11D supergravity. Focusing first on the 4-point amplitude, we demonstrate that our pr…
The pure spinor superparticle and 10D super-Yang-Mills amplitudes
Max Guillen, Marcelo dos Santos, Eggon Viana
We present a prescription for computing tree-level scattering amplitudes in 10D super-Yang-Mills (SYM) theory using the pure spinor worldline formalism. The pure spinor formalism h…
Beta-deformation in Twistor-String Theory
Eggon Viana
In this work, we investigate how the marginal beta deformation of the super-Yang-Mills theory manifests within the context of the topological B-model in the twistor space $…
Beta deformed sigma model and strong deformation coupling limit
Eggon Viana
We study the beta deformation of the superstring in at all orders in the deformation parameter, using the pure spinor formalism. This is necessary to study the re…