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Calendar of Physics Talks Vienna
| Phase structure of gauge theories on R^3 x S^1 |
| Speaker: | Prof. Mike Ogilvie (Washington University in St Louis, USA) |
| Abstract: | Recent work on suitably modified SU(N) gauge theories on R^3 x S^1 shows that confinement can be restored at small circumference in such a way that both semiclassical methods and lattice simulations are valid. The perturbative effective potential indicates the restoration of confinement, and color magnetic monopoles are responsible for the string tension in large Wilson loops. Furthermore, a rich phase structure for gauge theories emerges, including partially confined phases for N>3. Topics to be discussed include the basic physics of the phase structure on R^3 x S^1, application to the large-N limit, the interplay between confinement and chiral symmetry restoration in QCD with adjoint quarks, and the phase structure of Higgs models. |
| Date: | Mon, 17.10.2011 |
| Time: | 15:30 |
| Duration: | 60 min |
| Location: | Seminar room 138A, Freihaus 7th floor, yellow section |
| Contact: | Andreas Schmitt |
| Quantum-limited interferometry and the challenge of gravitational-wave detection |
| Speaker: | Pierre Francois Cohadon (Laboratoire Kastler Brossel, U. Pierre et Marie Curie, Ecole Normale Supérieure, CNRS) |
| Abstract: | Gravitational waves are ripples of spacetime, created by gigantic astrophysical events such as star collapse and black-hole coalescence. First predicted by A. Einstein in1916, GW have been actively hunted for about 50 years. I will describe how the current GW interferometers combine high-flying concepts (curved spacetime and quantum fluctuations) and down-to-earth experimental physics (vacuum pumps and steel wire) to providea sensitivity sufficient to provide first astrophysical results. The next generation, expected to be online by 2015, will achieve a 10-fold sensitivity improvement and will signal the dawn of gravitational astronomy. |
| Date: | Mon, 17.10.2011 |
| Time: | 17:30 |
| Duration: | 60 min |
| Location: | Univ. Wien, Ernst-Mach-Hörsaal, Boltzmanngasse 5, 2nd floor |
| Contact: | Dr. Christiane Losert / Univ. of Vienna |
| Holographic View on the Quark Gluon Plasma |
| Speaker: | Dominik Steineder (TU Wien) |
| Abstract: | We start by reviewing experimental hints that suggest that the quark gluon plasma, which can be produced in heavy ion collisions taking place at RHIC (Relativistic Heavy Ion Collider) and LHC (Large Hadron Collider) is a strongly coupled liquid rather than a weakly coupled gas. In order to study aspects of this strongly coupled matter we introduce holography also known as gauge gravity duality and calculate the shear viscosity. Finally we discuss the possibilities of studying anisotropic systems within this framework. |
| Date: | Tue, 18.10.2011 |
| Time: | 12:30 |
| Duration: | 60 min |
| Location: | Uni Wien ( Boltzmanngasse 5, 5th floor, Schrödinger HS / large seminar room ) |
| Contact: | Sabine Ertl |
| Quantum field theory on locally noncommutative spacetimes |
| Speaker: | Gandalf Lechner (Univ. Wien) |
| Abstract: | im Rahmen des Seminars für Mathematische Physik |
| Date: | Tue, 18.10.2011 |
| Time: | 14:15 |
| Duration: | 60 min |
| Location: | Fakultät für Physik, Erwin Schrödinger-Hörsaal, Boltzmanngasse 5, 5. Stock |
| Contact: | J. Yngvason |
| Lorentzian geometry with continuous metrics |
| Speaker: | Piotr Chrusciel (Univ. Wien) |
| Abstract: | im Rahmen des Literaturseminars |
| Date: | Thu, 20.10.2011 |
| Time: | 14:15 |
| Duration: | 60 min |
| Location: | Arbeitsgruppe: Gravitation, Währinger Strasse 17, Seminarraum A, 2. Stock |
| Contact: | R. Beig |
| Effective field theory for electric dipole transitions of heavy quarkonium |
| Speaker: | Piotr Pietrulewicz (Uni.Wien) |
| Abstract: | im Rahmen des Teilchenphysikseminars |
| Date: | Thu, 20.10.2011 |
| Time: | 14:15 |
| Duration: | 60 min |
| Location: | Fakultät für Physik, Erwin Schrödinger-Hörsaal, Boltzmanngasse 5, 5. Stock |
| Contact: | A. Hoang |
| Annihilation Processes in Random Velocity Fields |
| Speaker: | Tomás Lucivjanský (Univ.Wien) |
| Abstract: | im Rahmen der gemeinsam veranstalteten Seminare "Komplexe Stochastische Systeme (Univ.Wien) und "Analyse Komplexer Systeme" (Medizinische Univ.Wien) |
| Date: | Fri, 21.10.2011 |
| Time: | 14:15 |
| Duration: | 90 min |
| Location: | Fakultät für Physik, Erwin Schrödinger-Hörsaal, Boltzmanngasse 5, 5. Stock, 1090 Wien |
| Contact: | H. Hüffel, Stefan Thurner |
| Probing coherence of highly excited Rydberg wave packets |
| Speaker: | Shuhei YOSHIDA (Institut für Theoretische Physik, TU Wien) |
| Abstract: | Rydberg states are true giants in the atomic world with sizes reaching 10 micrometer for n = 300 and constitute mesoscopic entities. Recent advances in experimental techniques allow to design various shapes of wave packets using those Rydbeg states and monitor their dynamics. In this talk, we present how to extract information on wave packets from measured time-dependent signals. One key issue in such protocols is the maintenance of coherence. A method analogous to spin echo know for the study of nuclear magnetic resonance is applied to demonstrate the suppression of inhomogeneous broadening. |
| Date: | Fri, 21.10.2011 |
| Time: | 15:30 |
| Location: | Hörsaal des Atominstituts, Stadionallee 2, 1020 Wien |
| Contact: | Johannes Majer |
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