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Calendar of Physics Talks Vienna
| Categorified colored HOMFLY invariants of rational tangles |
| Speaker: | Paul Wedrich (Cambridge University) |
| Abstract: | The colored Jones and HOMFLY polynomials are invariants of knots in S^3 that are defined via the representation theory of quantum sl(N). I will start by explaining how these invariants generalize to the case of tangles, i.e. knot fragments in B^3. For the case of rational tangles, I will introduce a picture-way of computing a categorified version of colored HOMFLY polynomials, thereby proving a tangle-analogue of a conjecture of Gukov and Stosic. Based on joint work with Mihajlo Cekic and Jake Rasmussen. |
| Date: | Mon, 30.06.2014 |
| Time: | 10:30 |
| Duration: | 60 min |
| Location: | ESI |
| Contact: | Nils Carqueville |
| A Non-abelian self-duality equation in 6-dimensions and Multiple M5-branes in string theory |
| Speaker: | Chong-Sun Chu (Tsing Hua University Taiwan) |
| Abstract: | In this talk, we will discuss a self-duality equation for a
non-abelian 2-form gauge field in 6 dimensional spacetime. We will also
discuss its application in string theory as the equation of motion
describing the dynamics of the self-dual 2-form living on the
worldvolume of a system of multiple M5-branes. Solutions of the
worldvolume theory will be presented, and we will show that their
properties match perfectly with what one expects from supergravity. |
| Date: | Tue, 01.07.2014 |
| Time: | 14:15 |
| Duration: | 60 min |
| Location: | Fakultät für Physik, Erwin-Schrödinger-Hörsaal, Boltzmanngasse 5, 5. Stock |
| Contact: | Harold Steinacker |
| A study of Higgs mechanism in Yang-Mills and Chern-Simons Field Theory |
| Speaker: | Kolagani Sriharitej (IISER Pune) |
| Date: | Wed, 02.07.2014 |
| Time: | 13:00 |
| Duration: | 60 min |
| Location: | SEM 136 (Freihaus, Wiedner Hauptstrasse 8-10), Institute for Theoretical Physics, Vienna University of Technology |
| Contact: | Daniel Grumiller |
| Towards new non-geometric backgrounds |
| Speaker: | Erik Plauschinn (Padova) |
| Abstract: | Non-geometric backgrounds in string theory are known to have
very interesting features, and have led to new developments in
non-commutative - and even non-associative - geometry and field theory.
However, almost all of these constructions are local, or are based on
toroidal models, which from a string-theory perspective is quite
unsatisfactory.
In my talk, I will address this issue. First, I review the recent
developments in non-geometric string theory and highlight some of the open questions and shortcomings. Second, I introduce a formalism to perform collective T-duality transformations in order to obtain non-geometric backgrounds; and third, I apply this formalism to the three-sphere. |
| Date: | Wed, 02.07.2014 |
| Time: | 16:00 |
| Duration: | 60 min |
| Location: | SEM 136 (Freihaus, Wiedner Hauptstrasse 8-10), Institute for Theoretical Physics, Vienna University of Technology |
| Contact: | Johanna Knapp and Jan Rosseel |
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