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Calendar of Physics Talks Vienna
| Generating particle-like scattering states in wave transport |
| Speaker: | Prof. Stefan Rotter (TU Wien) |
| Abstract: | I will speak about our recent work on scattering states which display trajectory-like wave function patterns in wave transport through complex systems [1]. These beam-like scattering states feature the dual property of having a well-defined scattering delay time and deterministic transmission close to 0 or 100%. An operational protocol for generating these states is put forward which is based solely on a system's scattering matrix and which we implemented numerically for ballistic and disordered scattering landscapes. I will conclude by a discussion of envisioned realizations of our ideas with electromagnetic, acoustic or matter waves with possible applications like wave focusing and secure/low-power communication [2].
[1] S. Rotter, P. Ambichl, and F. Libisch, Phys. Rev. Lett. 106, 120602 (2011).
[2] Physical Review Focus, April issue (2011).
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| Date: | Mon, 20.06.2011 |
| Time: | 14:30 |
| Duration: | 45 min |
| Location: | Freihaus Semraum 138B |
| Contact: | Prof. Karsten Held |
| Positron emission tomography - An Indroduction |
| Speaker: | Albert Hirtl (MedUni Wien) |
| Abstract: | Positron emission tomography (PET) has proven to be a very useful diagnostic and research tool in nuclear medicine. It provides the possibility to visualise physiological processes (e. g., tumour metabolism) in vivo with high spatial resolution. With the construction of PET-CT systems, which are[..] |
| Date: | Mon, 20.06.2011 |
| Time: | 16:00 |
| Duration: | 60 min |
| Location: | SMI, Seminar room, Boltzmanngasse 3, 1090 Wien, Room 2.08 |
| Contact: | Roland Gsell |
| Quark Matter and Neutron Stars |
| Speaker: | Mark Alford (Washington University in St Louis) |
| Date: | Mon, 20.06.2011 |
| Time: | 16:15 |
| Duration: | 60 min |
| Location: | Institute for Theoretical Physics, TU Wien, SEM 136, 10th floor, Wiedner Hauptstr. 8-10, 1040 Wien |
| Contact: | Andreas Schmitt |
| Vienna Theory Lunch Seminar - Black Hole Microstates |
| Speaker: | Andrea Puhm (CEA-Saclay Paris) |
| Abstract: | A century after the first black hole solution to Einstein's equation was found black holes remain an intense and puzzling area of research. While general relativity is a very good description far away from the black hole horizon quantum mechanical effects like Hawking radiation are present close to the horizon leading to apparent inconsistencies like information loss. A theory of quantum gravity is needed in order to describe black holes in full glory and to resolve these puzzles. In this talk I will introduce how black holes can be described in string theory and how ''black hole microstates'' may cure these paradoxes. Constructing such microstates is a difficult task and so far they have been found only for extremal (supersymmetric and non-supersymmetric) black holes.
Schedule Overview |
| Date: | Tue, 21.06.2011 |
| Time: | 12:30 |
| Duration: | 60 min |
| Location: | SEM 136 (Freihaus, Wiedner Hauptstrasse 8-10), Institute for Theoretical Physics, Vienna University of Technology |
| Contact: | Sabine Ertl |
| Pointlike localized observables for infinite spin Wigner representations |
| Speaker: | Christian Köhler (Univ.Wien) |
| Abstract: | im Rahmen des Seminars für Mathematische Physik |
| Date: | Tue, 21.06.2011 |
| Time: | 14:15 |
| Duration: | 60 min |
| Location: | Fakultät für Physik, Erwin Schrödinger-Hörsaal, Boltzmanngasse 5, 5. Stock, 1090 Wien |
| Contact: | J. Yngvason |
| Quantum interferometric visibility as a witness of general relativistic proper time |
| Speaker: | Prof. Caslav Brukner (Wien) |
| Abstract: | Vortrag |
| Date: | Wed, 22.06.2011 |
| Time: | 16:00 |
| Duration: | 60 min |
| Location: | Arbeitsgruppe: Gravitation, Währinger Strasse 17, Seminarraum A, 2. Stock |
| Contact: | P. Chrusciel und R. Beig |
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