CPT

Calendar of Physics Talks Vienna

New Particle Searches at Belle
Speaker:Jolanta Brodzicka (Institute of Nuclear Physics PAN, Krakow)
Abstract:The recent discovery of several charmonium-like resonances indicates a renaissance of the $c\bar{c}$ spectroscopy. Many of these so called $XYZ$ states do not fit the conventional $c\bar{c}$ spectrum which is described, so far successfully, by the quark models. This suggests that some of them might be exotic. Majority of these observations come from the Belle experiment and have been enabled by the large data sample provided by the KEKB factory. In this talk the recent experimental evidences of the $XYZ$ states will be presented along with discussion on future measurements which can shed light on the nature of these particles.
Date: Tue, 12.04.2011
Time: 09:30
Duration: 60 min
Location:SMI, Seminar room, Boltzmanngasse 3, 1090 Wien, Room 2.08
Contact:Roland Gsell

Predicting electron transfer rates (with computer simulations)
Speaker:Harald Oberhofer (TU München)
Abstract:We show the feasibility of using computer simulations to calculate electron exchange reaction rates in extended systems from scratch. We achieve this by determining the dependence of all parameters occurring in the Marcus theory rate expression on the distance $r$ of Donor and Acceptor. Using both,
Date: Tue, 12.04.2011
Time: 12:30
Duration: 60 min
Location:Uni Wien ( Boltzmanngasse 5, 5th floor, Schrödinger HS / large seminar room )
Contact:N.-O. Walliser

Anyonen in der algebraischen Quantenfeldtheorie
Speaker:Matthias Plaschke (Univ. Wien)
Abstract:im Rahmen des Seminars für Mathematische Physik
Date: Tue, 12.04.2011
Time: 14:15
Duration: 60 min
Location:Fakultät für Physik, Erwin Schrödinger-Hörsaal, Boltzmanngasse 5, 5. Stock
Contact:J. Yngvason

Molecular diffusion processes in organic thin film growth
Speaker:Ao.Univ.Prof. Dr. Christian Teichert (Institut für Physik, Montanuniversität Leoben)
Abstract:Crystalline films of conjugated organic semiconductors offer attractive potential for optoelectronic and electronic applications on flexible substrates. Due to the complexity and anisotropy of the molecular building blocks, novel growth mechanisms and rich self-organization phenomena can occur as is demonstrated for the growth of the rod-like oligophenylene molecule parasexiphenyl (6P). On clean mica(001), the self-organization of 6P crystallites into one-dimensional chains is observed by atomic-force microscopy (AFM) where the 6P molecules lie almost flat on the surface[1]. On an ion bombarded, amorphous mica surface, the formation of terraced mounds composed by almost upright standing molecules is observed. Quantitative analysis of the mound morphology together with transition state theory calculations reveals the existence of molecule bending during step edge crossing and level dependent Ehrlich Schwoebel barriers [2]. For the same system, the size of the critical nucleus has been determined from island size and capture zone distribution [3]. When growing 6P on Ir(111) supported graphene sheets, layer by layer growth up to at least four layers could be achieved, as has been recorded with low-energy electron microscopy [4]. [1] C. Teichert, et al., Appl. Phys. A 82 (2006) 665. [2] G. Hlawacek, et al., Science 321 (2008) 108. [3] T. Potocar, et al., Phys. Rev. B 83 (2011) 075423. [4] G. Hlawacek, Nano Lett. 11 (2011) 333.
Date: Tue, 12.04.2011
Time: 16:00
Location:Technische Universität Wien, Institut für Angewandte Physik, Seminarraum 134A, Turm B (gelbe Leitfarbe), 5. OG, 1040 Wien, Wiedner Hauptstraße 8-10
Contact:Univ.Prof. Dr. Ulrike Diebold

Reaktionen an Oberflächen: Vom Atomaren zum Komplexen
Speaker:Gerhard Ertl (Fritz-Haber-Institut der Max-Planck-Gesellschaft, Berlin)
Abstract:Chemische Reaktionen an den Oberflächen von Festkörpern sind u.a. verantwortlich für die heterogene Katalyse, die die Grundlage für die chemische Industrie (z.B. Haber-Bosch-Prozess), aber auch von Prozessen für den Umweltschutz (z.B. Auto-Abgas-Katalysator) darstellt. Moderne physikalische Methoden erlauben die Aufklärung bis ins atomare Detail. Unter bestimmten Bedingungen kann es dabei auch zur Ausbildung dynamischer Strukturen kommen, die als Modelle für zahlreiche ähnliche Phänomene der Selbstorganisation in der Natur dienen können. Moderator: Ulrich Schubert ( ÖAW, TU Wien) Veranstalter: ÖAW und Industriellenvereinigung Wien
Date: Tue, 12.04.2011
Time: 18:15
Location:Festsaal der ÖAW Dr. Ignaz Seipel-Platz 2 1010 Wien
Contact:Dr. Marianne Baumgart Büro für Öffentlichkeitsarbeit Dr. Ignaz Seipel-Platz 2 1010 Wien T +43 1 51581-1219 F +43 1 51581-1227 marianne.baumgart@oeaw.ac.at www.oeaw.ac.at/deutsch/aktuell/hppr.html

Multi-component generalisations of the Camassa-Holm equation
Speaker:Rossen Ivanov (Dublin Institute of Technology)
Date: Wed, 13.04.2011
Time: 11:00
Location:Erwin Schrödinger International Institute, Boltzmanngasse 9, 1090 Wien, Schrödinger lecture hall
Contact:ESI

Parton fragmentation within an identified jet at NNLL
Speaker:Massimiliano Procura (TU München)
Abstract:im Rahmen des Teilchenphysikseminars
Date: Thu, 14.04.2011
Time: 14:15
Duration: 60 min
Location:Fakultät für Physik, Erwin Schrödinger-Hörsaal, Boltzmanngasse 5, 5. Stock
Contact:A. Hoang

The Bartnik quasilocal mass of a trapped region
Speaker:Walter Simon (Vienna)
Abstract:im Rahmen des Literaturseminars
Date: Thu, 14.04.2011
Time: 14:15
Duration: 60 min
Location:Fakultät für Physik, Arbeitsgruppe: Gravitation, Währinger Strasse 17, Seminarraum A, 2. Stock
Contact:R. Beig

Modelling the soliton interactions of the nonlinear Schrödinger equtions
Speaker:Vladimir S. Gerdjikov (Inst. for Nuclear Research and Nuclear Energy, Sofia)
Date: Fri, 15.04.2011
Time: 11:00
Location:Erwin Schrödinger International Institute, Boltzmanngasse 9, 1090 Wien, Schrödinger lecture hall
Contact:ESI

Photonic quantum simulation of frustration in chemical and physical systems
Speaker:Philip WALTHER (Univ.Wien u. IQOQI)
Abstract:im Rahmen der gemeinsam veranstalteten Seminare "Komplexe Stochastische Systeme" (Univ.Wien) u. "Analyse Komplexer Systeme (Mediz.Univ.Wien)
Date: Fri, 15.04.2011
Time: 14:30
Duration: 90 min
Location:Fakultät für Physik, Erwin Schrödinger-Hörsaal, Boltzmanngasse 5, 5. Stock, 1090 Wien
Contact:H. Hüffel, Stefan Thurner

Interacting Bosons and Fermions in 3D Optical Lattice Potentials
Speaker:Sebastian WILL (LMU München)
Date: Fri, 15.04.2011
Time: 15:30
Location:TU Wien Atominstitut, Hörsaal, Stadionallee 2, 1020 Wien
Contact:A. Rauschenbeutel