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Calendar of Physics Talks Vienna
| New higher-spin topological systems in 3D |
| Speaker: | Nicolas Boulanger (UMONS) |
| Abstract: | Motivated by the generation of action principles from off-shell dualisation, we present a general class of free, topological theories in three dimensions that exhibit higher-spin gauge invariance. In the spin-2 case, we recover the triplet system already known before. The higher-spin systems that we obtain, on the other hand, seem to be new. We show that the flat limit of our action around (A)dS_3 background gives rise to a one-parameter family of inequivalent actions in Minkowski space, whose non-Abelian deformations are studied. |
| Date: | Tue, 06.06.2023 |
| Time: | 14:00 |
| Duration: | 60 min |
| Location: | Erwin-Schrodinger-Horsaal (University of Vienna, Boltzmanngasse 5, 5th floor, Room Nr. 3500) |
| Contact: | D. Grumiller, S. Fredenhagen, E. Battista, R. Ruzziconi |
| Simplicity, complexity and the universe |
| Speaker: | Gian Giudice (CERN, Schweiz) |
| Abstract: | Colloquium - Erwin-Schrödinger visiting scientist:
At the foundation of reductionism is the idea â supported by plenty of experimental data â that simple fundamental physical laws emerge at small distances out of complex phenomena at large distances.
This special relationship between simplicity and complexity is what makes the natural world so fascinating and the study of physics so exciting. Developments in quantum cosmology seem to challenge
this view and reveal new scenarios which may affect our search for the fundamental laws of physics. |
| Date: | Tue, 06.06.2023 |
| Time: | 16:15 |
| Duration: | 60 min |
| Location: | Fakultaet fuer Physik, Erwin Schroedinger-HS, Boltzmanngasse 5, 5. Stock |
| Contact: | A. Hoang, M. Procura |
| Towards trapping Caesium in an optical double-well potential |
| Speaker: | Shreyas Gulhane (TU Wien, Atominstitut) |
| Abstract: | Caesium (Cs) is an interesting element in ultracold atom physics because of the possibility of tuning atom-atom interactions in relatively low fields. Cs in an optical dipole trap offers a magnetic field as free interaction tuning parameter. This tuning is exciting in numerous ways from a physics and application point of view. We want to explore the possibility of tuning interactions for matter-wave interferometry in an optical double-well trap. In this talk, I will give an overview of our experimental setup, current advancements, optical trapping, and then the talk will be focused on Comsol simulation of double-well potential. |
| Date: | Wed, 07.06.2023 |
| Time: | 16:15 |
| Duration: | 45 min |
| Location: | Helmut Rauch Hörsaal ATI |
| Contact: | Maximilian Prüfer |
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