Calendar of Physics Talks Vienna

Decoherence in Finite and Infinite Quantum Systems
Speaker:Prof. Dr. Philippe Blanchard (Bielefeld University, Germany)
Abstract:- Environment induced decoherence - The benefits of using the Heisenberg representation - Effective observables - Physical scenarios resulting from decoherence - A mathematical model of pointer states - Irreversible Evolutions on the CCR - Dynamics of a degenerate parametric oscillator in a squeezed reservoir *_References_* [1] P. Lukiewicz, R. Olkiewicz, J. Phys. A _35_ (2002) 6695 [2] Ph. Blanchard, R. Olkiewicz, PRL _90_ (2003) 010493 [3] Ph. Blanchard, R. Olkiewicz, RMP _15_ (2003) 217 [4] Ph. Blanchard, P. Lukiewicz, R. Olkiewicz, Phys. Lett. A _314_ (2003) 29 [5] P. Lukiewicz, R. Olkiewicz, CMP _239_ (2003) 241 [6] Ph. Blanchard, R. Olkiewicz, "Open Quantum Systems III", Lecture Notes in Mathematics 1882 (2006) pp 117-160 [7] Ph. Blanchard, M. Hellmich, P. Lukiewicz, R. Olkiewicz, JMP _48_ (2007) 012106 [8] M. Hellmich, "Decoherence in Infinite Quantum Systems", PhD, January 2009-07-16 [9] Ph. Blanchard, M. Hellmich, P. Lukiewicz, R. Olkiewicz, Journal of Functional Analysis 256 (2009) 1453-1475
Date: Mon, 28.06.2010
Time: 17:30
Duration: 60 min
Location:Hörsaal des Atominsituts, Stadionallee 2, 1020 Wien
Contact:Prof. Helmut Rauch

Attosecond electron dynamics in strong laser fields
Speaker:Stefanie Gräfe (TU Wien)
Abstract:In this talk, the physics of atoms and molecules in strong laser fields is introduced. An overview about different phenomena occuring in strong laser fields, such as strong-field ionization of the atom or molecule and subsequent rescattering of an liberated electron on the ionic core are presented. Taking a recent experiment as an example, I will show how an intense infrared laser field with a duration of only a few optical cycles allows one to actively control and steer the electronic dynamics in molecules. Further, methods how to measure the success of such a control experiment will be presented.
Date: Tue, 29.06.2010
Time: 12:30
Duration: 60 min
Location:SEM 136, Institute for Theoretical Physics, Vienna University of Technology
Contact:Theo Adaktylos, David Burke, Andreas Gabriel, Niklas Johansson & Christoph Spengler

The physics of the tau lepton: hadron decays
Speaker:Dr. J. Portolès (IFIC, Univ. de València) (Fakultät für Physik)
Abstract:im Rahmen des Teilchenphysikseminars
Date: Thu, 01.07.2010
Time: 14:15
Duration: 60 min
Location:Erwin Schrödinger-Hörsaal, Boltzmanngasse 5, 5. Stock
Contact:G. Ecker, H. Neufeld