Background constraints in the infinite tension limit of the heterotic string

by Thales Azevedo (Uppsala)

Monday 24 Oct 2016, 11:30 → 12:15 Europe/Stockholm

132:028

Shortly after Mason & Skinner introduced the so-called Ambitwistor Strings, Berkovits came up with a pure-spinor analogue of the theory, which was later shown to provide the supersymmetric version of the Cachazo-He-Yuan amplitudes. In this talk, after briefly reviewing the infinite tension limit of the pure-spinor heterotic superstring in flat space, I will show how the model can be coupled to a general curved background, and then proceed to show that all the classical constraints on the supergravity and super Yang-Mills background superfields are elegantly obtained from the sole requirement that the BRST charge be nilpotent.