Physics

High Energy Theory Seminar

October 07, 2011 | 1:30pm - 3:00pm
We provide dramatic evidence that `Mellin space' is the natural home for correlation functions in CFTs with weakly coupled bulk duals. In Mellin space, CFT correlators have poles corresponding to an OPE decomposition into `left' and `right' sub...

High Energy Theory Seminar

October 03, 2011 | 2:30pm - 4:00pm
We introduce a new numerical algorithm based on semidefinite programming to efficiently compute bounds on operator dimensions, central charges, and OPE coefficients in 4D conformal and N=1 superconformal field theories. Using our algorithm, we...

High Energy Theory Seminar

September 26, 2011 | 2:30pm - 4:00pm
Over the past few years, a remarkable duality between planar scattering amplitudes and null polygonal Wilson Loops has emerged in maximally supersymmetric Yang-Mills theory. The duality is now known to hold for arbitrary external helicities and to...

High Energy Theory Seminar

September 23, 2011 | 1:30pm - 3:00pm
I will discuss the chiral phase transition in a magnetic field at finite temperature and chemical potential within the Sakai-Sugimoto model, a holographic top-down approach to (large-N_c) QCD. For small temperatures the addition of a magnetic field...