Welcome and Opening Remarks Speaker(s): Theo JohnsonFreyd, Andre Henriques
Abstract:
Date: 13/08/2018  9:00 am
Collection: Higher Algebra and Mathematical Physics

What Chernâ€“Simons theory assigns to a point Speaker(s): Andre Henriques
Abstract: By a celebrated theorem of Jacob Lurie, an extended TQFT is entirely determined by what it assigns to a point. It is natural to ask whether this theorem applies to TQFTs of physical interest. And, if yes, what do these theories assign to a point? In this talk, I will propose an answer for the case o... read more
Date: 01/03/2017  2:00 pm
Series: Colloquium

The 576fold Bott Periodicity of the Majorana fermions Speaker(s): Andre Henriques
Abstract: Bott periodicity (1956) is a classical and old result in mathematics.
Its easiest incarnation of which concerns Clifford algebras. It says
that, up to Morita equivalence, the real Clifford algebras Cl_1(R),
Cl_2(R), Cl_3(R), etc. repeat with period 8. A similar result holds
for complex Clifford ... read more
Date: 06/04/2016  2:00 pm
Series: Colloquium

The classification of chiral WZW models Speaker(s): Andre Henriques
Abstract: I will explain how to axiomatize the notion of a chiral WZW model using the formalism of VOAs (vertex operator algebras). This class of models is in almost bijective correspondence with pairs (G,k), where G is a connected (not necessarily simply connected) Lie group and k in H^4(BG,Z) is a degree fo... read more
Date: 05/04/2016  11:00 am
Series: Mathematical Physics
