Found 7 result(s)
Triangular Seminar James Sparks (Oxford U.)
at: 17:00 room Blackett, LT2  abstract:

Regular Seminar James Sparks (Oxford)
at: 14:00 room E303 Queens Building  abstract: I will introduce a family of supersymmetric ChernSimonsmatter theories in d=2+1 dimensions, labelled by a positive integer n, and argue using a number of different dual descriptions that these describe the worldvolume dynamics of M2branes at a corresponding family of fourfold hypersurface singularities (the n=1 theory being the ABJM theory). The IR properties of these theories and their deformations are also studied. 
Regular Seminar James Sparks (Oxford)
at: 13:15 room 423  abstract:

String Theory & Geometry Seminar James Sparks (Oxford)
at: 13:00 room IMS seminar room  abstract:

Regular Seminar James Sparks (Oxford)
at: 14:00 room 410  abstract:

Regular Seminar James Sparks (Oxford University)
at: 13:30 room 140  abstract: Sasakian geometry is the odddimensional cousin of Kahler geometry. Although the two are very closely related, there are some interesting differences. I will give an introduction to Sasakian, and in particular SasakiEinstein, geometry, and review some of the developments in this subject over the last few years. In particular I'll cover explicit constructions, toric Sasakian geometry, and obstructions. Some of these results also provide new insights into Kahler geometry  for example, I'll describe very simple new obstructions to the existence of KahlerEinstein metrics on Fano orbifolds. 