Calendar of Physics Talks Vienna

Workshop on hadron physics with strangeness and beyond
Speaker:6 speakers
Abstract:One day workshop from 10:00 till 17:20 to discuss the current and future perspectives of the hadron physics with strangeness, charm and beyond. 6 Speakers including T. Hyodo (TITech) and Y. Ikeda (TITech). For more information please visit the programm of the Workshop on hadron physics with strangeness and beyond.
Date: Mon, 04.06.2012
Time: 10:00
Location:Stefan Meyer Institute for subatomic physics, Boltzmanngasse 3, 1090, Raum 2.08
Contact:Ken Suzuki

Lovelock theory, black holes and holography
Speaker:Jose Edelstein (University of Santiago de Compostela)
Abstract:Lovelock theory is the natural extension of general relativity to higher dimensions. It can be also thought of as a toy model for ghost-free higher curvature corrections in gravitational theories. It generically admits a family of AdS vacua, most (but not all) of them supporting black hole solutions that display interesting features. This provides an appealing arena to explore different holographic aspects in the context of the AdS/CFT and the fluid/gravity correspondences.
Date: Mon, 04.06.2012
Time: 14:00
Duration: 60 min
Location:TU Wien (Wiedner Hauptstr. 8-10), yellow area, 10th floor, seminar room E136
Contact:Sabine Ertl, Daniel Grumiller

Topological defects in polariton quantum fluids
Speaker:Benoit Deveaud-Plédran (École polytechnique fédérale de Lausanne EPFL)
Abstract:Microcavity polaritons are novel quasiparticles resulting from the strong coupling between photons, confined in an optical cavity, and excitons, confined in a quantum well. Polaritons are the half-light / half-matter bosons, and they cary a spin. Polaritons have recently been shown to undergo Bose Einstein condensation and superfluid properties of polariton fluis have been demonstrated. In this talk, I will present some results on the observation and dynamical properties of topological excitations of a polariton fluid. In particular, I will describe the observation of quantized vortices, half-quantized vortices, vortex streets, spin vortices and dark solitons. The variety of the typology observed in a very short amount of time comes in fact from the very short lifetime of polaritons that leak out of the cavity in the form of photons, allowing a direct observation of their phase properti
Date: Mon, 04.06.2012
Time: 17:30
Duration: 60 min
Location:TU Wien, Schütte-Lihotzky Hörsaal, HS 7, Karlsplatz 13, 1040 Wien
Contact:Dr. Christiane Losert / Univ. of Vienna

Correlation effects in transport through multi-level carbon nanotube quantum dots
Speaker:Dr. Sabine Andergassen (Vienna University , Faculty of Physics)
Abstract:We investigate the effect of Coulomb interactions on the electronic transport through quantum dots providing theoretical understanding for recent experiments on carbon nanotubes. The level structure is characterized by shells consisting of two doublets with strong- and weak tunnel couplings to the leads in absence of magnetic field. In addition to the Kondo ridges at zero field, the crossings of levels originating from different shells give rise to Kondo ridges at finite magnetic field. The observed bending with respect to the Kondo ridges at zero field turns out be a consequence of the magnetic-field dependence of the level-reservoir coupling strengths. Using the functional renormalization-group approach, we reproduce the features of the linear conductance measurements as a function of the applied gate voltage and magnetic field. In particular the bending of the Kondo ridges at finite magnetic field is traced back to the renormalization of the couplings.
Date: Tue, 05.06.2012
Time: 14:00
Duration: 60 min
Location:Wiedner Hauptstr. 8-10, Freihaus, 10th floor, yellow section, Seminarroom 136
Contact:Heike Hoeller, Secretary, Tel: 58801-13601

Die störungstheoretische S-Matrix nach Brunetti, Dütsch und Fredenhagen
Speaker:Sabina Alazzawi (Univ.Wien)
Abstract:im Rahmen des Seminars für Mathematische Physik
Date: Tue, 05.06.2012
Time: 14:15
Duration: 60 min
Location:Fakultät für Physik, Erwin Schrödinger-Hörsaal, Boltzmanngasse 5, 5. Stock
Contact:J. Yngvason

High Precision Mass Measurements of Rare Isotopes for Tests of ”Fundamental Symmetries
Speaker:Stephan Ettenauer (Harvard University)
Abstract:To date, Vud of the Cabibbo-Kobayashi-Maskawa quark mixing matrix is most precisely determined from superallowed nuclear ß-decays. In addition to half-life, branching ratio, and transition energy (called Q-value) of a superallowed decay, theoretical corrections have to be considered to extract Vud. Among those, the isospin symmetry breaking corrections, δC, show discrepancies between different theoretical models, which are critical to be resolved.
Date: Wed, 06.06.2012
Time: 17:00
Duration: 60 min
Location:Stefan Meyer Institute for subatomic physics, Boltzmanngasse 3, 1090, Raum 2.08
Contact:Ken Suzuki, 01 4277 29725