Calendar of Physics Talks Vienna

Exploring the Neutron Drip Line and Beyond
Speaker:Prof. Takashi Nakamura (Department of Physics, Tokyo Institute of Technology)
Abstract:How many more neutrons can be added to an atomic nucleus? Indeed, there exists a neutron-rich limit, called "neutron drip line", where any neutrons cannot be added any longer to form a bound nucleus. For instance, 24O(Z=8,N=16) is the most neutron-rich oxygen isotope, while that for Z=9 (Florine) is 31F(Z=9,N=22), so both these nuclei are on the neutron drip line. The location of the neutron drip line on the nuclear chart is, however, yet unknown above neon (Z=10) isotopes, and thus this provides challenges for modern nuclear structure theories. We also ask ourselves how atomic nuclei behave near and beyond the neutron drip line. With these questions in mind, I present recent experimental studies on exotic nuclei near/beyond the neutron drip line using... [for full abstract please visit: https://indico.smi.oeaw.ac.at/event/219/]
Date: Mon, 22.05.2017
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

Photocatalysis on TiO2: insights from simulations
Speaker:Annabella Selloni (Department of Chemistry, Princeton University, Princeton/USA)
Abstract:I shall present recent applications of first principles electronic structure calculations and molecular dynamics simulations to understand materials properties and reaction mechanisms in TiO2-based heterogeneous photocatalysis. Examples will focus on the structure and reactivity of anatase TiO2 aqueous interfaces, the behavior of charge carriers at the interface, and the formation and structure of so-called black TiO2, a promising functional material capable to absorb the whole spectrum of visible light.
Date: Tue, 23.05.2017
Time: 13:30
Location:TU Wien, Freihaus 1040 Wien, Wiedner Hauptstraße 8-10 Yellow Tower „B“, 1st floor, Fachgruppenraum Physik (gegenüber Mensa)
Contact:Univ.Prof. Dr. Ulrike Diebold

Calabi-Yau Volumes and Reflexive Polytopes
Speaker:Yang-Hui He (CITY Univ. of London)
Abstract:im Rahmen des Seminars für Mathematische Physik: We study various geometrical quantities for Calabi-Yau varieties realized as cones over Gorenstein Fano varieties, obtained as toric varieties from reflexive polytopes in various dimensions. We concentrate on reflexive polytopes up to dimension 4 and calculate the minimized volume of the Sasaki-Einstein base of the corresponding Calabi-Yau cone. By doing so we conjecture new bounds for the Sasaki-Einstein volume with respect to many topological quantities of the corresponding toric varieties. We give interpretations about these volume bounds in the context of associated field theories via the AdS/CFT correspondence. Based on joint work with R.-K. Seong and S.-T. Yau.
Date: Tue, 23.05.2017
Time: 14:15
Duration: 60 min
Location:Fakultät für Physik, Erwin-Schrödinger-Hörsaal, Boltzmanngasse 5, 5. Stock
Contact:S. Fredenhagen, H. Steinacker

Investigating the sub-surface with scanning probes
Speaker:Oğuzhan Gürlü (Istanbul Technical University, Department of Physics, Istanbul/Turkey)
Abstract:Scanning probe microscopes have evolved considerably faster than any other experimental technique not only because they give access to local topographic features of surfaces with potential atomic-scale resolution, or because they can be used as local spectroscopic probes; but also they can be modified such that they can provide physical or chemical information similar to age old techniques with the addition of extreme local precision. So far, the application of scanning probes was mostly confined to the surfaces of materials. In this talk I will introduce the capacity of Scanning Tunnelling Microscopy and Atomic Force Microscopy for investigating the sub surface. I will first discuss the photon emission scanning tunnelling microscopy and its applicability in studying the Graphene/Copper interfaces. The influence of the interface state forming between graphene and Cu(111) surfaces on the
Date: Tue, 23.05.2017
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:Ao.Univ.Prof. Dr. Wolfgang Werner

Hadronic vacuum polarization to the muon g-2 including QED corrections with twisted-mass fermions
Speaker:Silvano Simula (INFN Sezione di Roma Tre)
Abstract:im Rahmen des Teilchenphysikseminars
Date: Tue, 23.05.2017
Time: 16:15
Duration: 60 min
Location:Fakultät für Physik, Erwin-Schrödinger-Hörsaal, Boltzmanngasse 5, 5. Stock
Contact:A. Hoang, H. Neufeld