Calendar of Physics Talks Vienna

CoQuS Colloquium Alumnus Talk by Tarik Berrada
Speaker:Tarik Berrada (CoQuS)
Abstract:Energy economics Modern energy markets, and particularly electricity markets, are undergoing major transformations. Deregulation revealed the volatility of energy prices, leading to the financialization of energy markets and the multiplication of financial energy derivatives. The increasing share of intermittent energy sources also calls for enhanced ancillary services in the power grid, such as a balancing power market, to ensure the balance between power generation and power consumption. Energy economics draws heavily on quantitative methods. Forecasts play an increasing role as production from renewable sources challenges the stability of electricity grids. Powerful optimization methods are needed for the operation of complex and integrated energy systems. including various types of power plants, gas and district-heating networks and storage facilities.
Date: Mon, 22.01.2018
Time: 17:00
Duration: 90 min
Location:Lise-Meitner Hörsaal, Strudelhofgasse 4, 1090 Vienna

Fusion of defects in Landau-Ginzburg models in a functorial approach
Speaker:Peter Allmer (Vienna)
Abstract:im Rahmen des Seminars für Mathematische Physik
Date: Tue, 23.01.2018
Time: 14:00
Duration: 60 min
Location:Fakultät für Physik, Erwin-Schrödinger-Hörsaal, Boltzmanngasse 5, 5. Stock
Contact:S. Fredenhagen

Computer Simulation of Water-Mediated Adhesion between Organic Surfaces: Dissecting the Forces
Speaker:Michael Grunze (Max-Planck-Institut für medizinische Forschung, Department of Cellular Biophysics, Heidelberg/Germany)
Abstract:The adhesive forces operating between various surfaces in aqueous media are of interest in many areas ranging from biology to electronics. This refers, in particular, to supported lipid membranes where the water-mediated bilayer-substrate adhesion determines the stability of the system, and surfaces formed by self-assembled monolayers (SAMs) on solid substrates to modify the surface-sensitive properties of the latter. We used the grand canonical Monte Carlo technique to reveal the origin of the repulsive pressure operating between supported DLPC bilayers at short separations. By partitioning the inter-bilayer pressure into physically distinct components, it is shown that the short-range repulsion comes mainly from the direct electrostatic lipid-lipid interaction of the head groups in the opposing leaflets. By contrast, the electrostatic lipid-lipid interaction between DLPE bilayers is s
Date: Tue, 23.01.2018
Time: 16:00
Location:TU Wien, Institut für Angewandte Physik, E134 1040 Wien, Wiedner Hauptstraße 8-10 Yellow Tower „B“, 5th floor, SEM.R. DB gelb 05 B
Contact:Univ.Prof. Dr. Ulrike Diebold

Recent Developments in Monte Carlo Top Quark Mass Calibrations
Speaker:Moritz Preißer (Univ. Wien)
Abstract:im Rahmen des Seminars für Teilchenphysik
Date: Tue, 23.01.2018
Time: 16:15
Duration: 60 min
Location:Fakultät für Physik, Erwin-Schrödinger-Hörsaal, Boltzmanngasse 5, 5. Stock
Contact:A. Hoang, H. Neufeld

Neutron Stars: Cosmic Laboratories to study Matter at extreme Densities
Speaker:Prof. Dr. Ignazio Bombaci (Università di Pisa & INFN Sezione di Pisa)
Abstract:Neutron stars, the compact remnants of core-collapse supernova, are the densest macroscopic objects in the Universe. They represent the limit beyond which gravity overwhelm all the other forces of nature and lead to the formation of a black hole. Neutron stars are thus remarkable natural laboratories that allow us to investigate the fundamental constituents of matter and their interactions under extreme conditions that cannot be reproduced in terrestrial laboratories. In this talk, I will briefly discuss some of the present models to describe the equation of state of dense strongly interacting matter and their application to neutron star physics. In particular, I will focus... [the complete abstract is available here: https://indico.smi.oeaw.ac.at/event/257/]
Date: Wed, 24.01.2018
Time: 17:00
Duration: 60 min
Location:Stefan-Meyer-Institut, Boltzmanngasse 3, 1090 Wien, Seminarraum 3-2-08 (2. Stock)
Contact:Prof. Dr. Eberhard Widmann, Dr. Martin Simon

Lorentzian length spaces
Speaker:Clemens Saemann (Vienna)
Abstract:We introduce an analogue of the theory of length spaces into the setting of Lorentzian geometry and causality theory. The role of the metric is taken over by the time separation function, in terms of which all basic notions are formulated. In this way we recover many fundamental results in greater generality, while at the same time clarifying the minimal requirements for and the interdependence of the basic building blocks of the theory. A main focus of this work is the introduction of synthetic curvature bounds, akin to the theory of Alexandrov and CAT(k)-spaces, based on triangle comparison. Applications include Lorentzian manifolds with metrics of low regularity, closed cone structures, and certain approaches to quantum gravity. This is joint work with Michael Kunzinger. Preprint: https://arxiv.org/abs/1711.08990
Date: Thu, 25.01.2018
Time: 14:00
Duration: 60 min
Location:Arbeitsgruppe Gravitation, Währinger Strasse 17, Raum 218, 2. Stock, 1090 Wien
Contact:P.T. Chrusciel