Twistors, Unitarity and Hidden Symmetries of Amplitudes

Who: N Emil J Bjerrum-Bohr (NBI)
When: Monday, March 29, 2010 at 14:15
Where: The CP³ meeting room

The last couple of years have witnessed many intriguing breakthroughs in the computation and the understanding of the analytic structure of amplitudes in field theories. In this talk we will discuss such new twistor space inspired methods for amplitude computation and see how for example simple results for tree amplitudes can be recycled to give simple results at loop level via unitarity. We will also discuss hidden symmetries in amplitudes in Yang-Mills theory and gravity and discuss how such amplitudes can be related through newly found monodromy and KLT relations.