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Calendar of Physics Talks Vienna
| Higgs compositeness in Sp(2N) gauge theories: a first-principle numerical study |
| Speaker: | Prof. Biagio Lucini (Swansea) |
| Abstract: | Compositeness provides an elegant fundamental mechanism for electroweak symmetry breaking. The essential ingredient is the existence of a new strong force that breaks chiral symmetry. Through the gauging of an appropriate SU(2) x U(1) subgroup of the residual symmetry group, the Nambu-Goldstone boson associated to the symmetry breaking becomes the Standard Model Higgs. The Sp(4) gauge theory with two Dirac fundamental flavours provides a candidate for the microscopic origin of composite Higgs models based on the SU(4)/Sp(4) coset of the chiral symmetry breaking, which has been advocated as having a phenomenology compatible with the Standard Model. We report on the first non-perturbative calculation from first principles of this theory. We present the first results for the spectrum of glueballs of the pure Sp(4) Yang-Mills theory, an EFT framework for the interpretation of the masses and |
| Date: | Mon, 19.03.2018 |
| Time: | 10:30 |
| Duration: | 60 min |
| Location: | HEPHY Library |
| Contact: | Josef Pradler |
| Anodic tio2 nanotube layers: excellent platform for secondary materials |
| Speaker: | Jan Macak (Brno University of Technology, Central European Institute of Technology, Brno/CZ) |
| Abstract: | The self-organized 1D TiO2 nanotubular layers have attracted considerable scientific and technological interest over the past 13 years, all motivated by an expected great performance in the range of applications including photo-catalysis, solar cells, hydrogen generation and biomedical uses.1,2 The synthesis these nanotubular layers has been carried out by a conventional electrochemical anodization of Ti sheet that is very simple and a low-cost method. Except the 1D character, these nanotubes possess unique features such as tunable dimensionality, structural flexibility, unidirectional electron transport through nanotube walls, chemical and mechanical stability and biocompatibility.
One of the major application targets of TiO2 nanotubes has been their utilization as scaffolds or templates for deposition of secondary materials towards new applications. Numerous techniques were utilized fo |
| Date: | Tue, 20.03.2018 |
| Time: | 16:00 |
| Location: | Technische Universität Wien, Institut für Angewandte Physik, E134 yellow tower „B“, 5th floor, Sem.R. DB gelb 05 B (room number DB05L03), 1040 Wien, Wiedner Hauptstraße 8-10 |
| Contact: | Univ.Prof. Dr. Ulrike Diebold |
| Time quasi-periodic solutions to nonlinear Klein-Gordon equations |
| Speaker: | Wei-Min Wang (Cergy-Pontoise) |
| Abstract: | We discuss time quasi-periodic solutions to nonlinear Klein-Gordon equations
on the torus in arbitrary dimensions. We will explain the result and the method,
which is based on Anderson localization and algebraic geometry.
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| Date: | Thu, 22.03.2018 |
| Time: | 14:00 |
| Duration: | 60 min |
| Location: | Arbeitsgruppe Gravitation, Währinger Straße 17, 2. Stock, Raum 218 |
| Contact: | P.T. Chrusciel |
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