
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 loopholefree 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 loopholefree violation of Bell’s inequalities and the first primitive network experiments on a pair on spatially separated twoqubit 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 KawaiLewellenTye (KLT)
relations which express the selfscattering 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 illunderstood 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, ErwinSchrödingerHörsaal, Boltzmanngasse 5, 5. Stock 
Contact:  S. Fredenhagen, H. Steinacker 
On the Renormalization of the 2HiggsDoublet Model 
Speaker:  Margarete Mühlleitner (KIT, Karlsruhe) 
Abstract:  In view of the nondiscovery 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 2HiggsDoublet 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, ErwinSchrödingerHörsaal, Boltzmanngasse 5, 5. Stock 
Contact:  A. Hoang, H. Neufeld 
