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Calendar of Physics Talks Vienna
| Konforme Quantenfeldtheorie 2: Einfache Beispiele und Axiome für konforme Feldtheorien |
| Speaker: | Gerhard Fischer (Univ. Wien) |
| Abstract: | im Rahmen des Seminars für Mathematische Physik |
| Date: | Tue, 01.04.2014 |
| Time: | 14:15 |
| Duration: | 60 min |
| Location: | Fakultät für Physik, Erwin-Schrödinger-Hörsaal, Boltzmanngasse 5, 5. Stock |
| Contact: | J. Yngvason, J. Schlemmer |
| Speaker: | Matthias Steinhauser (KIT, Karlsruhe) |
| Abstract: | im Rahmen des Teilchenphysikseminars |
| Date: | Tue, 01.04.2014 |
| Time: | 16:15 |
| Duration: | 60 min |
| Location: | Fakultät für Physik, Erwin-Schrödinger-Hörsaal, Boltzmanngasse 5, 5. Stock |
| Contact: | A. Hoang |
| Newton's Law and Gravity Resonance Spectroscopy |
| Speaker: | Hartmut Abele (Vienna) |
| Abstract: | im Rahmen des Literaturseminars für Gravitation |
| Date: | Thu, 03.04.2014 |
| Time: | 14:15 |
| Duration: | 60 min |
| Location: | Arbeitsgruppe Gravitation, Währinger Strasse 17, Seminarraum A, 2. Stock, 1090 Wien |
| Contact: | P. Chrusciel, H. Rumpf |
| Higher Spin Versus Renormalization Group Equations |
| Speaker: | Ivo Sachs (LMU Munich) |
| Abstract: | We present a variation of an earlier attempt to relate renormalization group equations to higher spin equations. We work with a scalar field theory in 3 dimensions. In this case we show that the classical renormalization group equation is a variant of the Vasiliev higher spin equations for a certain subset of couplings. For the O(N) model at large N this equivalence extends to the quantum theory also away from the conformal fixed points.
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| Date: | Thu, 03.04.2014 |
| Time: | 16:00 |
| Duration: | 60 min |
| Location: | SEM 136 (Freihaus, Wiedner Hauptstrasse 8-10), Institute for Theoretical Physics, Vienna University of Technology |
| Contact: | Daniel Grumiller and Johanna Knapp |
| Cooking recipe for a Universe |
| Speaker: | Daniel Grumiller (TU Wien) |
| Abstract: | im Rahmen der gemeinsam veranstalteten Seminare "Komplexe Stochastische
Systeme" (Univ. Wien) und "Analyse Komplexer Systeme" (Med. Univ. Wien) |
| Date: | Fri, 04.04.2014 |
| Time: | 14:15 |
| Duration: | 90 min |
| Location: | Fakultät für Physik, Erwin-Schrödinger-Hörsaal, Boltzmanngasse 5, 5. Stock |
| Contact: | H. Hüffel und Stefan Thurner |
| Charge Dynamics in Broken-Symmetry Correlated States |
| Speaker: | Prof. Leonardo Degiorgi (ETH Zurich) |
| Abstract: | Understanding the interplay of broken-symmetry correlated states, of which spin and charge density waves (SDW and CDW) or superconductivity are primary examples, is among the most intriguing open questions of modern solid-state physics. Broken-symmetry correlated states fundamentally affect the excitation spectrum as well as charge dynamics, which can be revealed by optical methods like infrared spectroscopy.
As an example, I will focus my attention on one family of the novel iron-pnictide and chalcogenide superconductors, which provide an interesting arena in order to study the impact of electronic correlations with respect to the emergence of structural/magnetic and superconducting phase transitions.
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| Date: | Fri, 04.04.2014 |
| Time: | 14:30 |
| Duration: | 45 min |
| Location: | Seminar Room CBEG02 (387, Photonics); Gußhausstraße 27 |
| Contact: | A. Pimenov |
| Steering may-body quantum dynamics |
| Speaker: | Tommaso Clarco (Univeristy of Ulm) |
| Abstract: | Quantum technologies are based on the manipulation of individual degrees of freedom of quantum systems with exquisite precision. Achieving this in a real environment requires pushing to the limits the ability to control the dynamics of quantum systems of increasing complexity.
Optimal control techniques are known to enable steering the dynamics of few-body systems in order to prepare a desired state or perform a desired unitary transformation. I will present a recently developed optimal control method [1] that allows doing so for a many-body quantum system undergoing e.g. a quantum phase transition in the non-adiabatic regime.
This opens the way to a range of applications, from the suppression of defects in a superfluid-Mott-insulator transition with ultra-cold atoms in an optical lattice to the achievement of various quantum gates at the quantum speed limit.
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| Date: | Fri, 04.04.2014 |
| Time: | 15:30 |
| Location: | Hörsaal Atominstitut - Stationallee 2, 1020 Wien |
| Contact: | J. Schmiedmayer |
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