Seminar for Algebra

On Tuesday, April 25, 2023, 15:00 hours, Andrei Babichenko (Weizmann Institute of Science, Rehovot, Izrael) will hold lecture as part of Seminar for Algebra titled:

Nappi-Witten VOA and some of its representations

Lecture will be held in lecture room A101, Department of Mathematics.

Abstract:

We consider VOA H4 constructed from non-reductive Lie algebra h4   of the Wess-Zumino-Witten model discussed by Nappi and Witten. We study the category of H4 weight modules, with finite-dimensional weight spaces, classify the irreducible H4-modules in this category and compute their characters.
We observe non semisimplicity of this category suggesting that the VOA is logarithmic.

All Seminar members and others interested are invited.