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Calendar of Physics Talks Vienna
| Parity anomaly in even dimensions |
| Speaker: | Dmitri Vassilevich (ABC Federal U.) |
| Abstract: | It is known for a long time that Dirac fermions in odd dimensions have a parity anomaly. I will show that the parity anomaly exists also in even dimensions and is given by a boundary term. This anomaly is given by a Chern-Simons type action having a surprising level k=1/4. I will explain why this result is actually natural and discuss some physical implications. |
| Date: | Thu, 05.09.2019 |
| Time: | 14:00 |
| Duration: | 60 min |
| Location: | Inst. f. Th. Phys. TU Wien, seminar room 10th floor, Wiedner Hauptstrasse 8-10 |
| Contact: | Daniel Grumiller |
| Properties of dyons in N=4 theories at small charges |
| Speaker: | Justin David (IISc, Bangalore) |
| Abstract: | The discovery of Mathieu moonshine in the elliptic genus of K3 allows the construction of twisted ellipitc genera to every conjugacy class of the Mathieu group M23. These twisted elliptic genera play an important role in both N=2 and N=4 string compactifictions. In N=4 compactifications they are inputs to degeneracies of 1/4 BPS dyons, which at large values of charges are black holes. We study properties of these states at small values of charges which provide insight to their geometric description as black holes. |
| Date: | Thu, 05.09.2019 |
| Time: | 16:00 |
| Duration: | 60 min |
| Location: | Institute for Theoretical Physics, TU Wien, Seminar room 10th floor (yellow area), Wiedner Haupstr. 8-10, 1040 |
| Contact: | Timm Wrase |
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