Calendar of Physics Talks Vienna

Classification of Cones for Calabi-Yaus
Speaker:Harald Skarke (TU Wien)
Abstract:Calabi-Yau hypersurfaces in toric varieties can be described via reflexive polytopes. A generalized construction involving reflexive Gorenstein cones affords descriptions of Calabi-Yau manifolds of higher codimension as well as Landau-Ginzburg models. After reviewing some of the relevant concepts and the algorithm that led to the classification of reflexive polytopes in three and four dimensions, I will indicate how this algorithm needs to be be modified so that it can be applied to reflexive Gorenstein cones. I will also point out open classification problems that may well lie within the range of contemporary computer power.
Date: Mon, 10.04.2017
Time: 14:00
Duration: 60 min
Location:Seminar Room DB gelb 10, TU Wien, Freihaus, 10th floor (Wiedner Hauptstr. 8-10, A-1040 Vienna)
Contact:Johanna Knapp

The hemisphere partition function and Landau-Ginzburg orbifolds
Speaker:Dr. Emanuel Scheidegger (Univ. Freiburg)
Abstract:Starting with a variation of GIT quotients with potential we will review how to associate a function on the K-theory of the resulting spaces, called the hemisphere partition function. In case the resulting space is a Landau-Ginzburg orbifold we will relate this function to natural functions associated in the Landau-Ginzburg orbifold.
Date: Thu, 13.04.2017
Time: 11:00
Location:Erwin Schrödinger International Institute, Boltzmanngasse 9, 1090 Wien, Boltzmann lecture hall