Announcements

Upcoming events for 2014

Further information will be given as soon as they are available.

Mini String Forum

29.07.2014
On July 29th there will be a Mini String Forum in the bctp. There will be two talks one from 10-12 and one from 14-16. The speakers, titles and abstracts are
  • Mauricio Romo (IPMU Japan)
  • Gauged Linear Sigma Models disk partition function and nonabelian matrix factorizations
  • Time: 10-12, Place: bctp 1 (2.019)

Abstract: I will explain how the supersymmetric disk partition function Z_{D^2} of gauged linear sigma models relate to the central charge of objects in the category of B-branes of a Calabi-Yau (CY). The advantage of this approach is that Z_{D^2} provides an expression at every point in the quantum corrected moduli space of the CY. The B-branes in these models are realized naturally as matrix factorizations, equivariant under the gauge group. I will explain how to relate them to more familiar objects such as coherent sheaves on the CY and show applications of this result to different type of CYs, including more exotic non-complete intersections.

  • Eric Sharpe (Virginia Tech)
  • Recent developments in two-dimensional (0,2) theories
  • Time: 14-16, Place: bctp 1 (2.019)

Abstract: In this talk I will survey recent progress in heterotic string compactifications and two-dimensional theories with (0,2) supersymmetry. For the first half of the talk, I will give an overview of `quantum sheaf cohomology,' a heterotic analogue or generalization of quantum cohomology. For the second half of the talk, I will discuss various new and old dualities in two dimensions. Specifically, I will first review progress towards (0,2) mirror symmetry, a generalization of ordinary mirror symmetry. I'll then turn to gauge dualities in two dimensions, and how easy bits of math can be used to derive such dualities. Finally, I'll discuss decomposition for two-dimensional nonabelian gauge theories with center-invariant matter, which is the observation that such theories can decompose into a disjoint union of closely related theories.