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Calendar of Physics Talks Vienna
| Light vector-like quarks and the Higgs boson |
| Speaker: | Ivana Mustac (Josef Stefan Institute in Ljubljana) |
| Abstract: | Vector-like quarks are currently studied in increasing detail at the LHC, due to their importance in numerous models of New Physics. The current experimental null-results for their on-shell production have pushed the lower bounds on their masses near a TeV, however valid only under certain assumptions. Embedding vector-like quarks into models addressing the electroweak hierarchy problem by treating the Higgs as a pseudo-goldstone boson of a global symmetry changes current conclusions from flavour and electroweak precision tests and can have interesting implications for direct searches. We have studied the flavour phenomenology of such new states and calculated the implications for the electroweak hierarchy problem in light of recent Higgs data. |
| Date: | Tue, 10.12.2013 |
| Time: | 12:30 |
| Duration: | 60 min |
| Location: | Vienna University of Technology, Wiedner Hauptstr. 8-10, yellow area, 10th floor, seminar room E136 |
| Contact: | Iva Lovrekovic, Albert Georg Passegger - www.univie.ac.at/lunch-seminar |
| New corrections to mesoscopic level statistics for random band matrices |
| Speaker: | Laszlo Erdös (IST Austria) |
| Abstract: | im Rahmen des Seminars für Mathematische Physik |
| Date: | Tue, 10.12.2013 |
| Time: | 14:15 |
| Duration: | 60 min |
| Location: | Fakultät für Physik, Erwin-Schrödinger-Hörsaal, Boltzmanngasse 5, 5. Stock |
| Contact: | J. Yngvason |
| On geodesics in impulsive gravitational waves |
| Speaker: | Clemens Sämann (Univ. Wien) |
| Abstract: | im Rahmen des Literaturseminars für Gravitation |
| Date: | Thu, 12.12.2013 |
| Time: | 14:15 |
| Duration: | 60 min |
| Location: | Arbeitsgruppe: Gravitation, Währinger Strasse 17, Seminarraum A, 2. Stock |
| Contact: | H. Rumpf |
| QCD studies in Tau Decays |
| Speaker: | Matthias Jamin (Universitat Autonoma de Barcelona) |
| Abstract: | 1. Vorlesung im Rahmen der Schrödinger-Gastprofessur 2013 |
| Date: | Thu, 12.12.2013 |
| Time: | 14:15 |
| Duration: | 60 min |
| Location: | Fakultät für Physik, Erwin-Schrödinger-Hörsaal, Boltzmanngasse 5, 5. Stock |
| Contact: | A. Hoang, H. Neufeld |
| Technological and application aspects of the realization of Bragg gratings in optical fibers |
| Speaker: | Manfred ROTHHARDT (IPHT Jena, Research Dept. of Fiber Optics) |
| Abstract: | Bragg gratings in optical fibers - so called fiber Bragg gratings (FBG) have got many applications in optical telecommunications and optical sensors. Special laser systems with emission wavelength in the UV or fs-laser with various wavelengths are used for fabrication of FBG. Also there are special requirements to the optical fibers used for FBG inscription. Additional different methods for realization of interference patterns are relevant.
During the last 15 years new applications of FBG in different branches of Photonics became possible, particularly due to the high standing inscription technology. Examples are fiberoptic sensor chains i.e. for applications in biophotonics with more than 30 single FBG sensors in one optical fiber, wavelength filter devices for fiber optic Raman spectroscopy probes, Fabry-Perot resonators build by two FBG or high temperature sensors for temperature range up to 2000°C.
The talk will give an overview of inscription techniques and for example some typical applications are shown.
Many thanks to the colleagues in my working group, especially to:
M. Becker, S. Brückner, C. Chojetzki, T. Elsmann, J. Fiebrandt, E. Lindner, C. Michels, M. Teupser.
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| Date: | Fri, 13.12.2013 |
| Time: | 15:30 |
| Location: | TU Wien Atominstitut, Hörsaal, Stadionallee 2, 1020 Wien |
| Contact: | Arno Rauschenbeutel |
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