CPT

Calendar of Physics Talks Vienna

Deformations and inverse scatteringin AQFT
Speaker:Sabina Alazzawi (Univ. Wien)
Abstract:im Rahmen des Seminars für Mathematische Physik
Date: Tue, 24.06.2014
Time: 14:15
Duration: 60 min
Location:Fakultät für Physik, Erwin-Schrödinger-Hörsaal, Boltzmanngasse 5, 5. Stock
Contact:J. Yngvason, J. Schlemmer

Jet pT Resummation in Higgs Production
Speaker:Frank Tackmann (DESY, Hamburg)
Abstract:im Rahmen des Teilchenphysikseminars
Date: Tue, 24.06.2014
Time: 16:15
Duration: 60 min
Location:Fakultät für Physik, Erwin-Schrödinger-Hörsaal, Boltzmanngasse 5, 5. Stock
Contact:A. Hoang, V. Mateu

Constraining neutron star matter with QCD
Speaker:Aleksi Vuorinen (University of Helsinki)
Abstract:Next to black holes, the cores of neutron stars are the densest systems known in nature, and thus provide a unique laboratory for studying the properties of cold and dense strongly interacting matter. In my talk, I will first review what is known about such matter from first principles calculations at low and extremely high densities, and then argue how combining these insights it is possible to predict the composition and properties of neutron stars with controllable error bars.
Date: Wed, 25.06.2014
Time: 10:30
Duration: 60 min
Location:Seminar Room 136 (10th floor, yellow section)
Contact:Andreas Schmitt

Symmetries of N=(4,4) non-linear sigma models
Speaker:Roberto Volpato (AEI Potsdam)
Abstract:Two-dimensional conformal field theories with N=(4,4) superconformal symmetry and central charge 6 arise in compactifications of type II superstrings to six (or less) spacetime dimensions with 16 spacetime supersymmetries. There are two (known) classes of such conformal field theories, namely supersymmetric non-linear sigma models on a K3 surface or on a torus of real dimension four. I will discuss the main properties of these two classes of models and, in particular, the classification of the groups of symmetries that fix the N=(4,4) superconformal algebra.
Date: Wed, 25.06.2014
Time: 14:15
Duration: 60 min
Location:ESI, Boltzmann-Hörsaal
Contact:Nils Carqueville

Jet quenching enhancement around phase transition from dynamical holographic QCD model
Speaker:Prof. Mei Huang (Institute of High Energy Physics, Chinese Academy of Sciences, Beijing)
Abstract:The phase transition and jet quenching parameter have been investigated in the framework of dynamical holographic QCD model. It is found that both the trace anomaly and the ratio of the jet quenching parameter over cubic temperature show a peak around the critical temperature, and the ratio of jet quenching parameter over entropy density sharply rises at Tc. This indicates that the jet quenching parameter can characterize the phase transition. The effect of jet quenching parameter enhancement around phase transition on nuclear modification factor and elliptic flow have also been analyzed, and it is found that the temperature dependent jet quenching parameter from dynamical holographic QCD model can considerably improve the description of jet quenching azimuthal anisotropy as compared with the conformal case.
Date: Wed, 25.06.2014
Time: 14:15
Duration: 60 min
Location:TU Wien, Seminar Room 136 (10th floor, yellow section)
Contact:Andreas Schmitt

Heavy quark mass determinations from jets
Speaker:Bahman Dehnadi (Univ. Wien)
Abstract:In this talk I will present predictions for the thrust distribution of massive jet production at NNLL.The approach is based on sequences of three different effective field theoretic setups, constructed according to hierarchy of relevant mode scales, to describe the entire thrust distribution. The results shows a strong mass-dependence of jet observable that can be used to measure heavy quark masses without replying on MC generators. In particular it is also our aim to test and understand the mass parameters of MC generators, which is essential for precise measurement of top mass.
Date: Thu, 26.06.2014
Time: 14:15
Duration: 60 min
Location:Fakultät für Physik, Kurt Gödel Hörsaal, Boltzmanngasse 5/Strudlhofgasse 4, Erdgeschoß
Contact:A. Hoang

Phase transitions in collective intelligence systems
Speaker:Krishna Dovzhik (Univ. Wien)
Abstract:Analysis of Complex Systems“ (Med Uni Vienna) „Complex Stochastic Systems“ (Uni Vienna)
Date: Fri, 27.06.2014
Time: 14:15
Duration: 90 min
Location:Medizinische Univ. Wien, Informatikbibliothek, CeMSIIS; Bauteil 88, E03, Spitalgasse 23
Contact:H. Hüffel und Stefan Thurner