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Calendar of Physics Talks Vienna
| 2d flat space holography and warped-Schwarzian theory |
| Speaker: | Hamid Afshar (TU Wien) |
| Abstract: | The Sachdev-Ye-Kitaev (SYK) model is an interacting statistical quantum mechanical model. In low temperature this model has a (1+1)-dimensional dilaton-gravity description in AdS_2 spacetime known as Jackiw–Teitelboim model. The key link between gravity and quantum theory side is the boundary effective action denoted as "Schwarzian theory".
In this talk after reviewing this construction we set up this correspondence in the case of (1+1)-dimensional dilaton-gravity in flat spacetime and derive the analogous boundary action which coincides with the one discovered recently in1908.08089 as "warped Schwarzian theory". |
| Date: | Tue, 22.10.2019 |
| Time: | 13:45 |
| Duration: | 60 min |
| Location: | TU Wien - Wiedner Hauptstraße 8 - Red Area, 7th floor, Seminar Room (DC 07 A15) |
| Contact: | D. Grumiller, S. Fredenhagen |
| Theoretical studies of protein aggregation |
| Speaker: | Andrij Baumketner (NAS of Ukraine) |
| Abstract: | Protein aggregation refers to the proces of self-assembly of fully or partially unfolded proteins that leads to the formation of large insoluble complexes, aggregates. One type of protein aggreates – amyloid fibrils is implicated in various neurodegenertive diseases and also has found multiple uses in technology. We will discuss what can be learned about amyloid using theoretical models and methods. We will start with a broad overview of problems and challenges facing theoretical approaches, from the description of small oligomers, which are often considered kinetic intermediates to fibrils, to particlar details of amyloid structure. Later on we will focus on aggregation pathway of the peptide involved in Alzheimer’s disease. Finally, we will present a model specifically designed for simulation of protein aggregates and discuss the effect of electric field on amyloid assembly. |
| Date: | Tue, 22.10.2019 |
| Time: | 14:00 |
| Duration: | 60 min |
| Location: | TU Wien, Inst.f.Theoretical Physics, 1040 Wien, Wiedner Hauptstraße 8-10, yellow tower, 10th floor, Seminar Room |
| Contact: | G. Kahl |
| Precision in effective field theory studies for top quark and Higgs physics |
| Speaker: | Eleni Vryounidou (CERN) |
| Abstract: | im Rahmen des Teilchenphysikseminars |
| Date: | Tue, 22.10.2019 |
| Time: | 16:15 |
| Duration: | 60 min |
| Location: | Fakultät für Physik, Erwin-Schrödinger-Hörsaal, Boltzmanngasse 5, 5. Stock |
| Contact: | A. Hoang, S. Plätzer |
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