Calendar of Physics Talks Vienna

Vienna Theory Lunch Club - QCD at high temperatures: what have we learned about quark-gluon plasma
Speaker:Antti Gynther (VUT)
Abstract:During the last few years, heavy-ion collisions have taught us a great deal about the properties of quark-gluon plasma, some of which have proven to be quite surprising. Discovery that the produced matter behaves as a nearly perfect liquid has prompted a big theoretical challenge and has even brought some of the research in string theory back to its roots.
In this lunch talk I will give an introductory review on some of the things we have learned about quark-gluon plasmas and the theoretical challenges it has provided us with.
Overview Lunch club
Date: Tue, 17.03.2009
Time: 12:30
Duration: 60 min
Location:University of Vienna, Boltzmanngasse 5, 5th Floor, Large Seminar Room
Contact:Max Attems, Daniel Grumiller, Beatrix Hiesmayr

Bosonen im niedrigsten Landau-Niveau
Speaker:Jakob Yngvason (Mathematische Physik) (Fakultät für Physik)
Abstract:im Rahmen des Seminars für Mathematische Physik
Date: Tue, 17.03.2009
Time: 14:30
Duration: 60 min
Location:Erwin Schrödinger Hörsaal (ehem. großer Seminarraum), Boltzmanngasse 5, 5. Stock
Contact:J. Yngvason

Novel "h-shape" acoustic filter technology applied on yeast cultures
Speaker:Cosima Koch (Technische Universität Wien, Institut für Allgemeine Physik)
Abstract:When particles in suspensions, such as yeast cells in a culture medium, are subject to ultrasonic standing wave fields, the so-called acoustic radiation forces drive the particles into acoustic pressure nodal planes. This separates the particles from the suspension medium, thus creating a filtering effect. The recently developed "h-shape filter" is a continous through-put set-up that concentrates suspended particles in one outlet by using the pressure nodal plains as "rails" for the particles, while the cleared medium can be harvested from the other outlet. This new filtering method is particularly interesting for biotechnology applications. Hence, it is important to assess possible influences on biological cells. In the present study, Saccharomyes cerevisiae (baker’s yeast) have been investigated, because they are easy to handle and easily accessible. This talk introduces the h-shape filter and presents experimental results on yeast separation efficiency. Influence is discussed on cell viabilty, cell breakage and the cells’ ability to reproduce.
Date: Tue, 17.03.2009
Time: 16:00
Location:Technische Universität Wien, Institut für Allgemeine Physik, Seminarraum 134A, Turm B (gelbe Leitfarbe), 5. OG, 1040 Wien, Wiedner Hauptstraße 8-10
Contact:Ao.Univ.Prof. Dr. Martin Gröschl

Symmetries in the Neurino Mass Matrix
Speaker:Walter Grimus (Univ. Wien) (Fakultät für Physik)
Abstract:im Rahmen des Teilchenphysikseminars
Date: Tue, 17.03.2009
Time: 16:15
Duration: 60 min
Location:Erwin Schrödinger Hörsaal, Boltzmanngasse 5, 5. Stock
Contact:H. Neufeld

A Random Tour of Quantum Physics
Speaker:Tien D. Kieu (School of Physics, University of Melbourne & Portland House Research Group, Australien)
Abstract:In this talk to a general audience, rather than taking the risk of losing the audience by delving into deep technical details, I will present only at the general level some aspects of quantum physics that are of personal interests. The three topics discussed will include: Quantum Heat Engines and the Second Law of Thermodynamics; Quantum Measurements and the Third Law of Thermodynamics; and Computation with Quantum Phase Transitions. I hope that these would stimulate further discussions and research activities.
Date: Tue, 17.03.2009
Time: 17:30
Duration: 60 min
Location:Ernst-Mach-Hörsaal, Boltzmanngasse 5, 2. Stock, 1090 Wien
Contact:Prof. Anton Zeilinger, University of Vienna

Quantum Mechanics and “Spooky” Realism
Speaker:Henry Krips, Andrew W. Mellon Professor of Humanities (Claremont Graduate University)
Abstract:The paradoxes and questions raised by the measurement problem have spawned a host of more or less metaphysically obscure interpretations of QM. Most physicists bypass these metaphysical complexities, and stick to some version of the Bohr interpretation, especially in the positivistic, anti-metaphysical version favored by the early Heisenberg. It is as if the long history of failure to resolve the acrimonious disputes surrounding the interpretation of QM has led quantum physicists to become disenchanted with the garden of metaphysical delights. As John S. Bell made the point, despite more than seventy years of interpreting QM and attempting to resolve the measurement problem, the Bohr interpretation in its more pragmatic, less metaphysical forms remains the working philosophy for the average physicist. Professor Zeilinger presents a refreshing alternative approach. Although realist in the general sense of insisting upon a “mind independent, objective reality,” he criticizes the realist dogma that reality and information are separable. My own inclination is to stay closer to Einstein’s more traditional realism. But, like Zeilinger, I do not endorse Einstein’s refusal to take seriously “spooky” phenomena, such as entanglement and complementarity, which QM postulates.
Date: Wed, 18.03.2009
Time: 14:00
Duration: 60 min
Location:IQOQI Lecture Hall, 2nd Floor, Boltzmanngasse 3, 1090 Vienna
Contact:Andrea Aglibut, Templeton Programme, IQOQI, OEAW

Introduction to R-current anomaly in AdS/CFT
Speaker:Nils-Ole Walliser (VUT)
Abstract:An introduction is provided to the R-current anomaly in AdS/CFT, based upon the lecture notes by H. Nastase, chapter 9 (0712.0689).
Date: Thu, 19.03.2009
Time: 14:15
Duration: 90 min
Location:Vienna University of Technology, SEM 136 (10th floor, yellow sector, Freihaus)
Contact:Daniel Grumiller, Anton Rebhan