Calendar of Physics Talks Vienna

CoQuS colloquium - Seminar Talk by Ronald Hanson
Speaker:Ronald Hanson (CoQuS)
Abstract:Networks powered by quantum entanglement: from the first loophole-free Bell test to a quantum Internet. I will introduce the field of quantum networks and present an overview of the latest progress, including the first loophole-free violation of Bell’s inequalities and the first primitive network experiments on a pair on spatially separated two-qubit nodes.
Date: Mon, 30.01.2017
Time: 16:30
Location:Lise Meitner Hörsaal, Strudlhofgasse 4, 1st floor, Vienna
Contact:CoQuS Team

Minimal quantum field theory
Speaker:Rutger Boels (DESY Hamburg)
Abstract:Quantum field theory is the subject of a range of weighty textbooks. However, how much of these pages are really necessary? There is a growing list of results of observables for which the computed answer is very much simpler than their textbook calculation. A prime example are the Kawai-Lewellen-Tye (KLT) relations which express the self-scattering of gravitational waves in terms of a sum over products of gluon scattering amplitudes, as well as their loop level extension. Simple results beg for a simple explanation, especially in a theory as complicated and ill-understood as general relativity. Here I will show quite generally that scattering amplitudes can be computed by simply solving all physical constraints, which reduces the problem to linear algebra. Beyond inherent beauty this absolutelty minimal approach shows clearly that KLT relations are a direct and ......
Date: Tue, 31.01.2017
Time: 14:15
Duration: 60 min
Location:Fakultät für Physik, Erwin-Schrödinger-Hörsaal, Boltzmanngasse 5, 5. Stock
Contact:S. Fredenhagen, H. Steinacker

On the Renormalization of the 2-Higgs-Doublet Model
Speaker:Margarete Mühlleitner (KIT, Karlsruhe)
Abstract:In view of the non-discovery of direct hints for new physics at the LHC, the precise investigation of the Higgs sector becomes increasingly important. Among the plethora of new physics models that are discussed the 2-Higgs-Doublet Model (2HDM) belongs to the simplest extensions of the Standard Model (SM) Higgs sector that are in accordance with theoretical and experimental constraints. In order to be able to properly investigate the experimental Higgs data and, in the long term, to distinguish between possible models beyond the SM, precise predictions for the Higgs boson observables have to be made available on the theory side. This requires the inclusion of the higher order corrections. In my talk I will present electroweak corrections to the 2HDM Higgs decays with special focus on the renormalization of the angles ......
Date: Tue, 31.01.2017
Time: 16:15
Duration: 60 min
Location:Fakultät für Physik, Erwin-Schrödinger-Hörsaal, Boltzmanngasse 5, 5. Stock
Contact:A. Hoang, H. Neufeld