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Calendar of Physics Talks Vienna
| Vienna Theory Lunch Club - Center Vortices in Lattice QCD |
| Speaker: | Roman Höllwieser (VUT) |
| Abstract: | A basic introduction to Lattice QCD and the center vortex model of quark confinement will be presented. Quantum Chromodynamics (QCD) is a theory of the strong interaction, a fundamental force describing the interactions of the quarks and gluons making up hadrons (such as the proton, neutron or pion). Lattice QCD (LQCD) is the study of the SU(3) Yang–Mills theory of color-charged fermions (the quarks), in terms of quantum field theory on a four dimensional space-time lattice. It is the main tool for probing QCD in the non-perturbative regime, where QCD predicts quark confinement, which means that the force between quarks does not diminish as they are separated. The center vortex model has been proposed as an explanation of confinement in non-Abelian gauge theories. Center vortices, quantized magnetic flux-lines, compress the gluonic flux into tubes and cause a linearly rising potential at large separations. Here, this model will be formulated in SU(2) lattice gauge theory.
Overview lunch club |
| Date: | Tue, 24.03.2009 |
| Time: | 12:30 |
| Duration: | 60 min |
| Location: | TU Vienna, Inst. f. Theoretical Physics, Freihaus, Wiedner Hauptstr. 8-10, 10. OG, SEM136 |
| Contact: | Max Attems, Daniel Grumiller, Beatrix Hiesmayr |
| Finite family symmetry groups |
| Speaker: | Patrick Ludl (Univ. Wien) (Fakultät für Physik) |
| Abstract: | im Rahmen des Teilchenphysikseminars |
| Date: | Tue, 24.03.2009 |
| Time: | 16:15 |
| Duration: | 60 min |
| Location: | Erwin Schrödinger-Hörsaal, Boltzmanngasse 5, 5. Stock |
| Contact: | W. Grimus, H. Neufeld |
| Constructing renormalizable models for gauge fields in non-commutative space |
| Speaker: | Daniel Blaschke (Institut f. Theoretische Physik, TU Wien) |
| Abstract: | In trying to formulate a quantum field theory on non-commutative space-time, e.g. by employing the so-called Groenewold-Moyal star product, one inevitably has to deal with the infamous UV/IR mixing problem: New kinds of non-local IR divergences prevent the model from being renormalizable. In fact, so far only some modified scalar field theories on Euclidean non-commutative spaces have been found to be renormalizable by successfully circumventing problems due to UV/IR mixing. In this talk I give an introduction to this field of research and present promising candidates for renormalizable non-commutative gauge theories. |
| Date: | Wed, 25.03.2009 |
| Time: | 16:15 |
| Location: | ESI- Boltzmann lecture hall |
| Contact: | Raimar Wulkenhaar, Daniel Blaschke |
| Holographic renormalization |
| Speaker: | Daniel Grumiller (VUT) |
| Abstract: | An introduction is provided to holographic renormalization. The following questions will be addressed: What is holographic renormalization? Why is it needed, particularly in AdS/CFT? How is it implemented technically? |
| Date: | Thu, 26.03.2009 |
| Time: | 14:15 |
| Duration: | 90 min |
| Location: | Vienna University of Technology, SEM 136 (10th floor, yellow sector, Freihaus) |
| Contact: | Daniel Grumiller, Anton Rebhan |
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