Archive of IAS Friday High Energy Theory Seminars

In this talk I will discuss a deformation of the CP^{N-1} sigma model. Bosonic and fermonic formulations of the deformed model will be presented and conditions for which the theory appears to be quantum integrability will be spelled out...

We present an alternative approach to low-energy supersymmetry. Instead of imposing R-parity we apply the minimal flavor violation (MFV) hypothesis to the R-parity violating MSSM. In this framework, squarks can be light and the proton long lived...

We compute the coefficient of the potential three-loop divergence in pure N=4 supergravity and show that it vanishes, contrary to expectations from symmetry arguments. The recently uncovered duality between color and kinematics is used to greatly...

I will discuss recent progress in understanding loop-level scattering amplitudes in planar N=4 SYM. Compared with previous efforts aimed at exploiting integrability of this gauge theory, our approach differs mainly in its focus on canonical infrared...