Informal Pizza Seminar

Comments on Twistor strings: Old and New

Parameswaran Nair

City College of New York

I will give an introduction to twistor strings, starting from the field theory calculations. Then I shall talk about graviton amplitudes and how they suggest new twistor strings which describe variants of supergravity. I shall also present some calculations on graviton scattering amplitudes in the new twistor string theories.