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Calendar of Physics Talks Vienna
| Phases of fuzzy field theories |
| Speaker: | Juraj Tekel (Univ. Bratislava) |
| Abstract: | im Rahmen des Seminars für Mathematische Physik: We will discuss
history and recent developments in the study of the phase structure of
noncommutative scalar fields. Apart from the usual disorder and uniform
order phases, the theory exhibits a third phase, which survives the
commutative limit. This is connected to the UV/IR mixing of the
noncommutative theory. We will rewrite the fuzzy theory as a modified
quartic matrix model, with extra multitrace terms in the action and
perform saddle point analysis of the theory. Our goal will be to locate
the triple point of the theory and to reconstruct the numerically
obtained phase diagram. This goal will be successfully reached at the
end of the talk.
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| Date: | Tue, 24.03.2015 |
| Time: | 14:15 |
| Location: | Fakultät für Physik, Erwin-Schrödinger-Hörsaal, Boltzmanngasse 5, 5. Stock |
| Contact: | H. Steinacker |
| The Topology of the Universe from the Cosmic Microwave Background Temperature and Polarization |
| Speaker: | Prof. Aneesh V. Manohar (University of California, San Diego) |
| Abstract: | 4. Vorlesung der Schrödinger-Gastprofessur: The talk discusses constraints on the global topology of the universe from CMB data,
in particular constraints on torus topologies T^3, T^2 x R and
S^1 x R^2. The theoretical predictions are compared with experimental
CMB data.
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| Date: | Tue, 24.03.2015 |
| Time: | 16:15 |
| Duration: | 60 min |
| Location: | Fakultät für Physik, Erwin-Schrödinger-Hörsaal, Boltzmanngasse 5, 5. Stock |
| Contact: | A. Hoang, P.T. Chrusciel |
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