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Calendar of Physics Talks Vienna
| Classical Holographic Codes |
| Speaker: | Enrice Brehm (LMU München) |
| Abstract: | im Rahmen des Seminars für Mathematische Physik: I present toy models for the AdS/CFT correspondence that model essential features
such as the Ryu-Takayanagi formula and bulk reconstruction properties. Recently Quantum Error Correcting Codes (QECC) were shown to fall into this class, mainly because of their very special entanglement structure. I want to present some models that are motivated by QECC and share the same features but without quantum correlations, as e.g. entanglement. We call them classical holographic codes.
They can be understood as concatenated probabilistic codes and can be represented
as networks uniformly covering hyperbolic space.
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| Date: | Tue, 25.10.2016 |
| Time: | 14:15 |
| Duration: | 60 min |
| Location: | Fakultät für Physik, Erwin-Schrödinger-Hörsaal, Boltzmanngasse 5, 5. Stock |
| Contact: | S. Fredenhagen, H. Steinacker |
| Massive and supermassive neutrinos as dark matter |
| Speaker: | Patrick Ludl (Univ. of Southampton, U.K.) |
| Abstract: | im Rahmen des Teilchenphysikseminars |
| Date: | Tue, 25.10.2016 |
| Time: | 16:15 |
| Duration: | 60 min |
| Location: | Fakultät für Physik, Erwin-Schrödinger-Hörsaal, Boltzmanngasse 5, 5. Stock |
| Contact: | A. Hoang, H. Neufeld |
| Testing the quantum and gravity interface with single photons |
| Speaker: | Christopher Hilweg (Vienna) |
| Abstract: | Quantum theory and general relativity are considered the two pillars of modern physics. Their predictions are verified with spectacular precision on scales covering several orders of magnitude. Despite their success in describing nature, a unique framework reconciling these two theories is still missing. In this talk we will present a modified version of a Mach-Zehnder interferometer, capable of realizing the first table-top experiments probing jointly the quantum superposition principle and the mass-energy equivalence principle for single photons. The novel gravitational effects to be tested in this project arise when a single photon is travelling in a superposition along two paths located at different heights above earth and which are then brought to interfere. Due to the Shapiro delay, the travel time of a photon depends on the altitude of its path above earth. For the time . . . .
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| Date: | Thu, 27.10.2016 |
| Time: | 14:00 |
| Duration: | 60 min |
| Location: | Arbeitsgruppe Gravitation, Währinger Strasse 17, Raum 218, 2. Stock, 1090 Wien |
| Contact: | P.T. Chrusciel |
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