Maths HEP Lunchtime Seminars: Twisted N=4 SYM and topological CFT
16 November 2001 13:00 in CM221
"The diagonally twisted flat space Euclidean N=4 super Yang-Mills theory is shown to be a conformal field theory with nilpotent conformally invariant BRST operators. It is described how this arises from a diagonal twisting of the conformal group of the theory with the R-symmetry group. With the addition of suitable non-minimal terms, one can define the model in curved space in such a way as to preserve the conformal BRST symmetries and local Weyl invariance together with the topological structure. The result is a topological conformal field theory in four dimensions. This may be related to topological holography in four dimensions"