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Calendar of Physics Talks Vienna
| Workshop: Mathematical Challenges in String Phenomenology |
| Speaker: | R. Blumenhagen, M.R. Douglas, M. Kreuzer, E. Scheidegger (organizers) (ESI) |
| Abstract: | Program of the second week |
| Date: | Mon, 13.10.2008 |
| Time: | 09:30 |
| Duration: | 14400 min |
| Location: | ESI |
| Contact: | M. Kreuzer |
| Pizza Seminar - Recent developments in 3d gravity |
| Speaker: | Niklas Johansson (Uppsala University) |
| Abstract: | A consistent quantization of three-dimensional AdS gravity would be
of great interest, since this theory contains black holes. Recently,
a chiral version of 3D topologically massive gravity was constructed.
This theory has many appealing features. Its CFT dual was conjectured
to be purely right moving, and therefore holomorphic. In this talk we
review this construction, and the sometimes heated debate regarding
its properties.
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| Date: | Tue, 14.10.2008 |
| Time: | 12:30 |
| Duration: | 60 min |
| Location: | University of Vienna, Boltzmanngasse 5, 5th Floor, Large Seminar Room |
| Contact: | Max Attems, Daniel Grumiller, Beatrix Hiesmayr |
| On the Use of Topological Degrees of Freedom in Electrodynamics for Radio-Based Space Physics, Astrophysics, and Communications |
| Speaker: | Prof. Bo Thidé (Swedish Institute of Space Physics, Uppsala, Sweden ) |
| Abstract: | Using the full symmetry of the electromagnetic field, in particular its angular momentum and other topological degrees of freedom, it is possible to better characterize radio signals received from space, thus facilitating the extraction of the complete information content of the signals and to improve communication protocols. We have shown how this can be accomplished in the radio domain with the use of vector antennas and software-controlled digital radio instrumentation. This allows full control, in software, of field quantities of any order and therefore the technique can be used for fundamental studies of EM orbital angular momentum and related quantities. |
| Date: | Tue, 14.10.2008 |
| Time: | 14:00 |
| Location: | IQOQI-Seminarraum 2.08, 2nd Floor Boltzmanngasse 3, 1090 Vienna |
| Contact: | Markus Arndt |
| Some applications of the Mellin-Barnes representation in quantum field theory |
| Speaker: | Eduardo de Rafael (CNRS-Luminy, Marseille) (Fakultät für Physik) |
| Abstract: | 2.Vorlesung im Rahmen der Schrödinger-Gastproffesur 2008 |
| Date: | Tue, 14.10.2008 |
| Time: | 16:15 |
| Duration: | 60 min |
| Location: | Großer Seminarraum, Boltzmanngasse 5, 5. Stock, 1090 Wien |
| Contact: | W. Grimus, H. Neufeld |
| Dispersive representation and shape of Kl3 form factors |
| Speaker: | Emilie Passemar (Univ. Bern) (Fakultät für Physik) |
| Abstract: | im Rahmen des Teilchenphysikseminars |
| Date: | Thu, 16.10.2008 |
| Time: | 14:15 |
| Duration: | 60 min |
| Location: | Großer Seminarraum, Boltzmanngasse 5, 5. Stock |
| Contact: | H. Neufeld |
| Integrating optical devices with atom chips |
| Speaker: | Michael TRUPKE (Imperial College London) |
| Abstract: | Atom chips are powerful tools which allow the cooling, trapping and transport of atoms close to their surface. The aim of the projects described in this talk is to complement these features with the detection and manipulation techniques offered by optical devices. The talk will focus on a scalable, fibre-coupled Fabry-Perot microcavity with which we have demonstrated the detection of atoms and observed cavity-enhanced photon emission. Recent improvements of the experimental apparatus will be presented, together with an outlook on the future of these experiments.
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| Date: | Fri, 17.10.2008 |
| Time: | 15:15 |
| Location: | Seminarraum Atominstitut, Stadionallee 2, 1020 Wien |
| Contact: | Jörg Schmiedmayer |
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