Talk notes

Talks in 2016

  • String geometry and spin geometry on loop spaces
    Parallel session "Mathematical aspects of string theory and string geometry", Conference ''Classical and quantum symmetries in mathematics and physics'', Friedrich-Schiller-Universität Jena, July 2016
  • Transgressive central extensions of loop groups
    Conference "Colloquium on Algebras and Representations - Quantum 2016", Universidad Nacional de Córdoba, March 2016

Talks in 2015

  • String structures and supersymmetric sigma models
    Program "Higher structures in string theory and quantum field theory", Erwin-Schrödinger-Institut für Mathematische Physik, December 2015

Talks in 2014

  • Differential string classes and loop spaces
    Workshop "Differential Cohomologies", The Graduate Center, CUNY, August 2014
    Notes   Video  
  • Loop group geometry and transgression
    47. Seminar Sophus Lie, Schloss Rauischholzhausen, May 2014

Talks in 2013

  • Unendlich-Kategorien und Quantenfeldtheorie
    Weihnachtskolloquium, Ernst-Moritz-Arndt-Universität Greifswald, December 2013
  • Lectures on gerbes, loop spaces, and Chern-Simons theory
    Workshop "Chern-Simons Theory: Geometry, Topology and Physics", University of Pittsburgh, May 2013
  • Lectures on gerbes with connection
    Workshop "Topological Aspects of Quantum Field Theories", National University of Singapore, January 2013

Talks in 2011

  • A loop space formulation for the geometry of abelian gerbes
    Conference "Analysis, Geometry, and Quantum Field Theory", Universität Potsdam, October 2011
  • Geometric string structures and supersymmetric sigma models
    Workshop "Higher Gauge Theory, TQFTs, and Categorification", Cardiff University, May 2011
  • Abelian gauge theories on loop spaces and their regression
    Workshop "Higher Gauge Theory, TQFT and Quantum Gravity", Instituto Superior Técnico Lisboa, February 2011

Talks in 2010

  • Global Gauge Anomalies in two-dimensional Bosonic Sigma Models
    Workshop "Geometry, Quantum Fields, and Strings: Categorial Aspects", Mathematisches Forschungsinstitut Oberwolfach, June 2010
  • Transgression of Gerbes to Loop Spaces
    Workshop "Higher Structures in Topology and Geometry IV", Georg-August-Universität Göttingen, June 2010

Talks in 2009

  • String Connections and Supersymmetric Sigma Models
    Workshop "Homotopy theory and higher algebraic structures", Special Section at AMS Western Section meeting, University of California at Riverside, November 2009
  • Multiplicative Gerbes and Chern-Simons Theory
    Seminar "Topologie", Universität Bonn, October 2009
  • String Connections and Chern-Simons 2-Gerbes
    Workshop "Strings, Fields and Topology", Mathematisches Forschungsinstitut Oberwolfach, June 2009
  • Smooth Functors for higher-dimensional Parallel Transport
    Workshop "Smooth Structures in Logic, Category Theory and Physics", Ottawa University, May 2009

Talks in 2008

  • Transport Functors and Connections on Gerbes
    Seminar "Topology", University of California at Berkeley, August 2008
    Notes Part 1   Notes Part 2  
  • Geometry for 2-Form Gauge Fields
    Conference "Tagung des Sonderforschungsbereichs Particles, Strings and the Early Universe", Deutsches Elektronen-Synchrotron DESY Zeuthen, February 2008

Talks in 2007

  • Parallel Transport and Functors
    Conference "Categories in Geometry and mathematical Physics", Mediterranean Institute For Life Sciences, September 2007
  • Parallel Transport Functors of Principal Bundles and (non-abelian) Bundle Gerbes
    Conference "Principal Bundles, Gerbes and Stacks", VBAC-Meeting, Physikzentrum Bad Honnef, June 2007

Talks in 2006

  • Gerbes in unoriented WZW-Models
    Summer school "Modern Mathematical Physics IV", University of Belgrade, September 2006

Talks in 2005

  • Introduction to Gerbes in Conformal Field Theory
    Workshop "Gerbes, twisted K-theory and conformal field theory", Mathematisches Forschungsinstitut Oberwolfach, August 2005
  • Einführung in die perturbative Quantisierung von Chern-Simons-Theorien
    Seminar "Geometrische Aspekte der konformen Feldtheorie", Rerik, February 2005