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Calendar of Physics Talks Vienna
| Gravitational Anomaly and Transport |
| Speaker: | Eugenio Megias (IFT CSIC/UAM and Universitat Autonoma de Barcelona) |
| Abstract: | Quantum anomalies give rise to new transport phenomena. In particular a magnetic field can induce an anomalous current via the chiral magnetic effect and a vortex in the relativistic fluid can also induce a current via the chiral vortical effect. The related transport coefficients can be calculated via Kubo formulas. In this work we perform a first-principle quantum field theory calculation of the Kubo formula for the anomalous vortical conductivity and show that it receives contributions proportional to the gravitational anomaly coefficient, inducing a dependence proportional to T^2 in the vorticity. The gravitational anomaly gives rise to an anomalous vortical effect even for an uncharged fluid. As a second step of this work, we study an holographic AdS/CFT modelling of the gravitational anomaly by considering a 5-dim Einstein-Maxwell model supplemented with a gauge Chern-Simons and a mixed gauge-gravitational Chern-Simons term. We confirm at strong coupling also the dependence on T^2 induced by the gravitational anomaly. The holographic computation is performed via two different methods: Kubo Formulas and fluid/gravity correspondence.
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| Date: | Mon, 12.03.2012 |
| Time: | 14:00 |
| Duration: | 60 min |
| Location: | Institut f. Theoret. Physik, TU Wien, SEM 136, Wiedner Hauptstr., 10th floor |
| Contact: | Anton Rebhan (TU Wien) |
| Wellendressur in Theorie und Praxis (Antrittsvorlesung) |
| Speaker: | Stefan Rotter (TU Wien) |
| Date: | Mon, 12.03.2012 |
| Time: | 17:15 |
| Duration: | 60 min |
| Location: | Freihaus HS5, Wiedner Haupstr. 8-10, 2nd floor, green tower |
| Contact: | Stefan Rotter |
| String dualities, singularities and gauge symmetries |
| Speaker: | Andreas Braun (Vienna University of Technology) |
| Abstract: | After a brief introduction to string theory and string dualities I will present two classic examples in which non-abelian gauge symmetries correspond to a singular compactification manifold on one side of the duality. This leads to an interesting connection between representation theory and topology. Physically, the non-abelian gauge bosons come from branes wrapped on the vanishing cycles. This talk intends to motivate and explain these results in a pedagogic fashion. |
| Date: | Tue, 13.03.2012 |
| Time: | 12:30 |
| Duration: | 60 min |
| Location: | VUT: Wiedner Hauptstr. 8-10, 10th floor (yellow), seminar room E136 |
| Contact: | Vienna Theory Lunch Seminar (http://www.univie.ac.at/lunch-seminar/) |
| Störungstheoretische AQFT: Ein erster Überblick über Störungstheorie |
| Speaker: | Jan Schlemmer (Fakultät für Physik) |
| Abstract: | im Rahmen des Seminars für Mathematische Physik |
| Date: | Tue, 13.03.2012 |
| Time: | 14:15 |
| Duration: | 60 min |
| Location: | Fakultät für Physik, Erwin Schrödinger-Hörsaal, Boltzmanngasse 5, 5. Stock, 1090 Wien |
| Contact: | J. Yngvason |
| Pion properties from QCD sum rules |
| Speaker: | Dmitri Melikhov (HEPHY Wien/Univ.Wien) |
| Abstract: | im Rahmen des Teilchenphysikseminars |
| Date: | Thu, 15.03.2012 |
| Time: | 14:15 |
| Duration: | 60 min |
| Location: | Fakultät für Physik, Erwin Schrödinger-Hörsaal, Boltzmanngasse 5, 5. Stock, 1090 Wien |
| Contact: | H. Neufeld |
| 12 Billion Years of Galaxy Evolution |
| Speaker: | Bodo Ziegler (Vienna) |
| Abstract: | im Rahmen des Literaturseminars |
| Date: | Thu, 15.03.2012 |
| Time: | 14:15 |
| Duration: | 60 min |
| Location: | Arbeitsgruppe: Gravitation, Währinger Strasse 17, Seminarraum A, 2. Stock |
| Contact: | R. Beig |
| Mathematics of complete fluid systems |
| Speaker: | Eduard Feireisl (Inst.of Mathematics, Academy of Sciences of the Czech Republic, Prague u. ESI Wien |
| Abstract: | im Rahmen der gemeinsam veranstalteten Seminare "Komplexe Stochastische Systeme" (Univ.Wien) und "Analyse Komplexer Systeme" (Med.Univ.Wien) |
| Date: | Fri, 16.03.2012 |
| Time: | 14:00 |
| Duration: | 60 min |
| Location: | Fakultät für Physik, Erwin Schrödinger-Hörsaal, Boltzmanngasse 5, 5. Stock, 1090 Wien |
| Contact: | H. Hüffel, Stefan Thurner |
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