String Theory Seminar

Mon, 09/10/2006 12:00	Michael Movshev (IAS)	String Theory Seminar	L3
	Yang-Mills theory and superquadric

Tue, 10/10/2006 12:00	Andre Lukas (Oxford)	Quantum Field Theory Seminar Relativity Seminar String Theory Seminar	L3
	M-theory on Calabi-Yau 5-folds

Mon, 16/10/2006 12:00	Balazs Szendroi (Oxford)	String Theory Seminar	L3
	Quivers, Dimers and Noncommutative DT Invariants

Mon, 23/10/2006 12:00	James Sparks (Oxford)	String Theory Seminar	L3
	Einstein Geometry and Conformal Field Theory
	I shall describe two recent results in Sasaki-Einstein geometry, which is the odd-dimensional cousin of Kahler-Einstein geometry, and how they are related to four-dimensional superconformal field theory (SCFT) via the AdS/CFT correspondence. The first is a proof that the volumes of such Einstein manifolds are always algebraic numbers, which reflects a similar statement about central charges in SCFTs due to Intriligator and Wecht. The second descibes two simple holomorphic obstructions to the existence of such Einstein metrics. In such obstructed cases the non-existence of the dual superconformal fixed point may be proven by a simle application of the unitarity bound and the “a-theorem”, respectively, and these may be related directly to the geometrical obstructions via AdS/CFT arguments. On the mathematical side, these are new simple obstructions to the existence of Kahler-Einstein metrics on Fano orbifolds. `/notices/events/abstracts/string-theory/mt06/sparks.shtml`

Tue, 31/10/2006 12:00	Chris Hull (Imperial College, London)	Relativity Seminar String Theory Seminar	L3
	Twistor Strings and Einstein Gravity I

Wed, 01/11/2006 12:00	Chris Hull (Imperial College, London)	Relativity Seminar String Theory Seminar
	Twistor strings and Einstein supergravity

Mon, 06/11/2006 12:00	Boris Pioline (Universite Paris VI et VII and ENS)	String Theory Seminar	L3
	Quantizing BPS Black Holes in 4 Dimensions
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Fri, 10/11/2006 12:00	Tony Scholl (Cambridge)	String Theory Seminar	L3
	An introduction to the Langlands programme

Mon, 13/11/2006 12:00	David Skinner (Oxford)	String Theory Seminar	L3
	Heterotic Twistor Strings
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Mon, 20/11/2006 12:00	Mariana Grana (Saclay)	String Theory Seminar	L3
	Generalized geometries, effective actions and N=1 vacua

Mon, 27/11/2006 12:00	Ruben Minasian (Ecole Polytechnique and Imperial)	String Theory Seminar	L3
	Twisted Tori and (new) String Vacua
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Forthcoming Seminars

Mon, 20/05/2013 - 2:15pm

Eigenvalues of large random matrices, free probability and beyond.

Speaker: CAMILLE MALE
Mon, 20/05/2013 - 2:15pm

Four-manifolds, surgery and group actions

Speaker: Ian Hambleton
Mon, 20/05/2013 - 3:45pm

Fibering 5-manifolds with fundamental group Z over the circle

Speaker: Yang Su
Mon, 20/05/2013 - 3:45pm

Random Wavelet Series

Speaker: STEPHANE JAFFARD
Mon, 20/05/2013 - 4:00pm

The Hasse Principle for the Equation Polynomial=Norm: An Approach Using Sieve Theory

Speaker: Alastair Irving
Mon, 20/05/2013 - 5:00pm

Analysis of some nonlinear PDEs from multi-scale geophysical applications

Speaker: Bin Cheng
Tue, 21/05/2013 - 12:00pm

Quantum information processing in spacetime

Speaker: Ivette Fuentes (Nottingham)