Beschreibung: pizza

 

Vienna Theory Lunch Seminar

by Theodor Adaktylos, Andreas Gabriel, Niklas Johansson, Christoph Spengler and Nils-Ole Walliser

Tuesdays 12:15-13:30

held alternatively at:

TU Wien ( Wiedner Hauptstr. 8-10, yellow area, 10th floor, seminar room E136 )

Uni Wien ( Boltzmanngasse 5, 5th floor, Schrödinger HS / large seminar room )

 

We thank our kind sponsors:

 

Idee:

 

Idea:

Wie auf vielen Universitäten praktiziert wollen wir ein Lunch-Seminar etablieren, das aktuelle Themen der Theoretischen Physik, die von DiplomandInnen, DoktorandInnen und PostDocs behandelt werden, aufgreift.

Das Niveau soll so gewählt werden, dass jeder Student und jede Studentin am Ende des Studiums dem Vortrag folgen kann. Die Vortragenden werden ermutigt keinen "perfekten" Vortrag zu halten, und sollen hauptsächlich Ihre Motivation, warum sie dieses Thema gewählt haben, wiedergeben. Dabei dürfen durchaus offene Fragen und Probleme behandelt werden.

Damit es zu keinem "Zeitverlust" kommt, wird Mittagessen (Pizza, Sushi) gratis zur Verfügung gestellt.

We want to establish a lunch seminar as practiced at other universities. The focus is on recent theoretical research done by Master students, PhDs and PostDocs.

The seminar is designed for graduate students but should also be comprehensible to advanced undergraduate students. Pre-diploma students are particularly encouraged to attend so that they receive an overview of research activities conducted at both universities. Speakers are also encouraged to focus on their motivation for choosing their particular topic and to present open questions.

In order to avoid any "loss of time" we provide a free lunch (pizza, sushi).

Wie kann ich teilnehmen?

How can I join?

Einfach erscheinen! Um per Email informiert zu werden, bitte in die Mailinglist eintragen oder Mail an dburke at hep.itp.tuwien.ac.at oder an christoph.spengler at univie.ac.at

Just attend! To receive informations via email go to the Mailinglist or drop an email to dburke at hep.itp.tuwien.ac.at or christoph.spengler at univie.ac.at

 

5 Oct 2010

Uni Wien

Maximilian Attems (TU Wien)

Instabilities in the Quark-Gluon Plasma

Abstract: The quark-gluon plasma (QGP) is a phase at extremely high temperatures formed by deconfined quarks and gluons as predicted by quantum chromodynamics (QCD). Non-Abelian plasma instabilities play a crucial role in the nonequilibrium dynamics of a weakly coupled QGP. The evolution of Chromo-Weibel instabilties can be carried out thanks to real-time lattice simulations. The developed hard-expanding-loop (HEL) formalism allows the (numerical) calculation of the time evolution of gluonic mean fields in full 3 dimensional Bjorken expansion.

12 Oct 2010

TU Wien

Christoph Saulder (Uni Wien)

Dynamics of the Local Group in different theories of gravity

Abstract: The Local Group, our home galaxy group, consists of two large galaxies, the Milky Way and M31 (Andromeda Galaxy), and about 40 known galaxies. The starting point of the investigation is the observed distribution of the galaxies in the Local Group, which differs from our expectations. The problem is that most galaxies in our galaxy group are arranged in a quite thin plane which does not correspond to the disc-plane of one of the two dominant spiral galaxies. A possible explanation for the observed distribution is an interaction of the Milky Way and M31 about 10 to 12 Gigayears ago. At this time gas from outer parts of the galaxies has been scattered in the orbital plane of these two galaxies. It is investigated for which members of the Local Group this model is realistic and to reproduce the results of Sawa and Fujimoto in 2005. Since the orbits of dwarf galaxies around the host galaxies are sensitive to the shape of the host’s potential and to dynamical friction. So the dynamics of the Local Group are a perfect laboratory to test the Dark Matter paradigm and also an alternative theory, which is called MOdified Newtonian Dynamics (MOND). In this theory the law of gravitation is modified for small accelerations which occur in the outer parts of galactic discs and also in a galaxy group. In order to do this, stellar dynamical numerical simulations using newly developed software were run. The programmes were capable of performing n-body calculations with Newtonian gravity (and Dark Matter halos) or deep-MOND gravity, Hubble expansion and dynamical friction (only in the case of Newtonian gravity). The initial conditions of the models are optimised using a genetic algorithm until the distribution after the integration is sufficiently close to the observed distribution. The results are very multifarious, in some aspects also surprising and show that the model is possible in the case of Newtonian gravity but it has significant problems in MOND.

19 Oct 2010

Uni Wien

Gandalf Lechner (Uni Wien)

Deformations of quantum field theories

Abstract: TBA

9 Nov 2010

TU Wien

Stefan Schauer (AIT)

TBA

Abstract: TBA

16 Nov 2010

Uni Wien

TBA (TBA)

TBA

Abstract: TBA

23 Nov 2010

TU Wien

Massimiliano Rinaldi (University of Geneva)

TBA

Abstract: TBA

30 Nov 2010

Uni Wien

Tomas Rybar (RCQI Bratislava)

TBA

Abstract: TBA

7 Dec 2010

TU Wien

Xu-Guang Huang (Goethe Universität Frankfurt)

TBA

Abstract: TBA

14 Dec 2010

Uni Wien

TBA (TBA)

TBA

Abstract: TBA

11 Jan 2011

Uni Wien

TBA (TBA)

TBA

Abstract: TBA

18 Jan 2011

TU Wien

Nan Su (Goethe Universität Frankfurt)

Gluon Thermodynamics at Intermediate Coupling

Abstract: TBA

25 Jan 2011

Uni Wien

Meera Parish (Cavendish Laboratory, Cambridge)

TBA

Abstract: TBA

Program Summer Semester 2010
Program Winter Semester 2009/2010