Calendar of Physics Talks Vienna

Studies of Hadrons with the PANDA Experiment at FAIR
Speaker:Prof. Klaus Peters (GSI, Darmstadt & Institut für Kernphysik, Goethe-Universität, Frankfurt am Main)
Abstract:The PANDA (antiProton ANihilation in DArmstadt) collaboration at FAIR is a cooperation of more than 400 scientists from 19 countries. Its central goal is the elementary understanding of hadrons using the power of an antiproton beam. The vast difference in mass between the proton and its constituents is a manifestation of the importance of understanding the binding among quarks in the confinement regime. Exotic hadrons with their non- conventional structure, such as multi-quarks, hybrids, and glueballs will reveal uncharted properties of this binding. Proton form-factor measurements, deep virtual Compton scattering and the wide area of quark(-spin) dynamics as well as the behavior of hadrons inside nuclear media are significantly complementary aspects to understand the very nature of hadrons... [for full abstract please visit https://indico.smi.oeaw.ac.at/event/226/]
Date: Tue, 18.04.2017
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

(Non-)birational Calabi-Yaus from physics
Speaker:Johanna Knapp (TU Vienna)
Abstract:The gauged linear sigma model (GLSM) is a gauge theory that can be used to study Calabi-Yaus and their Kaehler moduli spaces. GLSMs with non-abelian gauge groups have been shown to produce Calabi-Yaus which are not birationally equivalent. After giving the basic definitions of a GLSM we discuss several explicit examples. In particular we present a new pair of non-birational Calabi-Yau threefolds with Hodge numbers h^(1,1) = 2 and h^(2,1) = 24 that was constructed from a non-abelian GLSM in collaboration with K. Hori.
Date: Thu, 20.04.2017
Time: 11:00
Duration: 60 min
Location:Erwin Schrödinger Int. Institute for Mathematics and Physics, Boltzmanngasse 9, 1090 Wien, Boltzmann lecture hall

Dualities and the metaplectic group
Speaker:Eric Sharpe (Virginia Tech)
Abstract:In this talk we will outline related work in two different areas. We will first describe progress in understanding the Bagger-Witten line bundle, that arises over moduli spaces of SCFTs. Previous work on this subject has all been somewhat abstract. We will describe the first concrete explicit example of a Bagger-Witten line bundle, over a moduli space of (2,2) SCFTs for sigma models on elliptic curves. We will see that the Bagger-Witten line bundle is well-defined over a moduli space constructed as a quotient of the upper half plane by the metaplectic group Mp(2,Z), an extension of SL(2,Z). In the second part of the talk, we will comment on the metaplectic group's role extending T-duality and various string dualities in high-dimensional string theories, extending standard duality groups such as SL(2,Z).
Date: Thu, 20.04.2017
Time: 16:00
Duration: 60 min
Location:Seminar Room DB gelb 10, TU Wien, Freihaus, 10th floor (Wiedner Hauptstr. 8-10, A-1040 Vienna)
Contact:Johanna Knapp