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Calendar of Physics Talks Vienna
| Chiral and deconfinement transitions in QCD-based theories with chemical potential in a small volume |
| Speaker: | Joyce Myers (University of Groningen) |
| Abstract: | The phase diagram of QCD at non-zero chemical potential is difficult to calculate because the coupling strength is large, preventing ordinary perturbation theory, and the action is complex, leading to the "sign problem" and preventing conventional lattice simulations. To understand better how to deal with complex actions and to obtain a qualitative picture of the phase diagram of QCD it can be useful to study the theory in a very small spatial volume, which allows for perturbation theory to be employed at all temperatures. We consider QCD and QCD-based theories on S^1 x S^3 for small S^3 from one-loop perturbation theory. The quark number, free energy, and Polyakov lines as a function of the temperature and chemical potential provide a sketch of the phase diagram for QCD and supersymmetric QCD in the limit of large Nc and Nf. |
| Date: | Tue, 15.05.2012 |
| Time: | 12:30 |
| Duration: | 60 min |
| Location: | Vienna University of Technology: Wiedner Hauptstr. 8-10, 10th floor (yellow), seminar room E136 |
| Contact: | Vienna Theory Lunch Seminar (http://www.univie.ac.at/lunch-seminar/) |
| Störungstheoretische AQFT: das Epstein-Glaser Verfahren |
| Speaker: | Andreas Merckel und Albert Passegger (Univ.Wien) |
| Abstract: | im Rahmen des Seminars für Mathematische Physik |
| Date: | Tue, 15.05.2012 |
| Time: | 14:15 |
| Location: | Fakultät für Physik, Erwin Schrödinger-Hörsaal, Boltzmanngasse 5, 5. Stock |
| Contact: | J. Yngvason |
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