Invited Seminar Talks and Research Visits
- 03/2026 Topological Quantum Computing Online Seminar
Dijkgraaf-Witten TQFT and Quantum Double Models with Defects - 03/2026 Mathematical Physics Seminar, Department Physik, Universität Wien
Dijkgraaf-Witten TQFT with defects - 02/2026 Séminaire GAAO, Laboratoire de Mathématiques Blaise Pascal, Université Clermont Auvergne
Trisection Invariants of 4-manifolds - 05/2025 Algebra Seminar, Department of Mathematics, Uppsala University
Dijkgraaf-Witten TQFT with defects - 07/2024 Institut für Mathematik, Universität Paderborn,
Poisson counterparts of Kitaev’s quantum double model - 06/2024 TQFT Club Seminar,
Mathematics Department, Instituto Superior Técnico, Lisbon, Online,
Dijkgraaf-Witten theory and quantum double models with defects - 05-06/2024 Research visit, School of Mathematics, University of Edinburgh
- 05/2024 Hodge seminar, University of Edinburgh,
Quantum double models and Dijkgraaf-Witten TQFT with defects - 04-05/2024 Research visit, School of Mathematics, University of Leeds
- 04/2024 Pure Mathematics Colloquium, University of Sheffield,
Dijkgraaf-Witten theory with defects - 04/2024 Séminaire “Groupes de Lie et espaces de modules”,
Séction de Mathématiques, University of Geneva,
Mapping class group actions in Kitaev’s quantum double models and their generalisations
- 02/2024 Mathematical Physics Seminar , The University of Melbourne,
Mapping class group actions and Kitaev’s quantum double model - 02/2023 Leeds algebra seminar, University of Leeds
A generalisation of Kitaev’s quantum double model - 11/2022 European Quantum Algebra Lectures (EQuAL),
Turaev-Viro-Barrett-Westbury state sums with defects - 09/2022 Research seminar Algebra and Mathematical Physics, Hamburg University
Turaev-Viro-Barrett-Westbury state sums with defects - 05/2022 Seminar Geometric Methods in Mathematics, TU Dresden
Mapping class group actions from Hopf monoids - 03/2021 Non-commutative geometry seminar,
Turaev-Viro state sum models with defects - 12/2020 ACMPS Online Seminar,
Mapping class group actions from Hopf monoids - 06/2020 [K-OS] Knot Online Seminar,
Mapping class group actions from Hopf monoids - 11/2019 Perimeter Institute for Theoretical Physics, Waterloo
Colloquium talk Ideal tetrahedra and their duals - 09/2019 Korea Institute for Advanced Study, Seoul
Mapping class group actions on quantised connections - 03/2019 School of Mathematical Sciences, University of Nottingham
Mapping class group actions in Hopf algebra gauge theory and Kitaev models - 11/2018 Department of Mathematics, University of Geneva
Ideal tetrahedra and their duals in 3d geometry - 10/2017 IMAG, University Montpellier 2
Kitaev lattice modes as a Hopf algebra gauge theory - 03/2017 ESI, Vienna,
Kitaev Lattice models as a Hopf algebra Gauge theory
Lectures on Poisson-Lie groups and Poisson homogeneous spaces - 03/2017 Center for Theoretical Physics of the Universe,
Institute for Basic Science, Seoul
Lecture Series on Knot and Quantum Invariants - 12/2016 Institute for Theoretical Physics, University of Bern
Kitaev lattice models as a Hopf algebra gauge theory - 12/2016 General Mathematics Seminar, Mathematical Research Unit,
University of Luxembourg
Generalised Shear coordinates for (2+1)-spacetimes - 11/2016 Center for Theoretical Physics of the Universe,
Institute for Basic Science, Seoul
Lecture series on topological gauge and quantum field theories - 01/2016 RTG 1493: Mathematical Structures in Modern Quantum Physics,
Department of Mathematics, University of Göttingen
Hopf algebra gauge theory on ribbon graphs - 06/2015 Mathematical Physics Group, University of Burgos
Hopf algebra gauge theory - 06/2015 Department of Mathematics, Hamburg University
Hopf algebra gauge theory on a ribbon graph - 06/2015 Max Planck Institute for Mathematics, Bonn
Hopf algebra gauge theory from lattice models - 05/2015 Séminaire Quantique, IRMA, University of Strasbourg
Hopf algebra gauge theory from lattice models - 03/2015-06/2015 research visit IRMA, University of Strasbourg
- 09/2014 Mathematical Physics Group, University of Burgos
On moduli spaces of 3D spacetimes - 09/2013 Simons Center for Geometry and Physics, Stony Brook University
Diagrams for Gray categories with duals - 07/2013 Mathematical Physics Group, University of Burgos
Drinfeld doubles in 3d gravity - 07/2013 Symposium Current Topics in Mathematical Physics,
University of Heidelberg
Quantum geometry and Teichmüller theory - 05/2013 Department of Mathematics, Hamburg University
Gray categories with duals and their diagrams - 02/2013 Seminar Groupes de Lie et espaces des modules,
Department of Mathematics, University of Geneva
Gauge fixing for the moduli space of flat ISO(2,1)-connections - 01/2013 Born-Hilbert Seminar,
Department of Mathematics, University of Göttingen
Gray categories with duals and their diagrams - 12/2012 Department of Mathematics, University of Marburg
Dynamische r-Matrizen aus eichfixierten Chern-Simons Theorien - 04/2011 Department of Mathematics, University of Bielefeld
Erweiterte Invarianten von Drei-Mannigfaltigkeiten
aus der Darstellungstheorie von Hopf Algebren - 11/2010 Department of Mathematics, University of Erlangen-Nürnberg
Erweiterte Invarianten von Drei-Mannigfaltigkeiten
aus der Darstellungstheorie von Hopf Algebren - 10/2010 Department of Physics, University of Erlangen-Nürnberg
Quantengravitation in drei Raumzeitdimensionen - 06/2010 Seminar on fundamental interactions,
Fakultät für Physik, Freiburg University
Gauge fixing and observables in (2+1)-dimensional gravity - 06/2010 Mathematical Physics Group, University of Burgos
Dynamical quantum group symmetries in (2+1)-gravity - 01/2010 Faculty of Physics, University of Warsaw,
Lecture series on (2+1) gravity - 06/2009 Department of Mathematics, UC Davis
Introduction to Observables in Three Dimensional Quantum Gravity
Observables in Three Dimensional Quantum Gravity - 03/2009 Mathematical Physics Group, University of Burgos
Measurements and spacetime geometry in (2+1)-dimensional gravity - 01/2009 Centre de Physique Théorique, Luminy, Marseille
Measurements via returning lightrays: Time, observables and geometry in vacuum (2+1)-gravity - 01/2009 LMPT, University of Tours
Time, measurements and observables in Lorentzian (2+1)-gravity - 12/2008 Spinoza Institute, Utrecht University
Time, measurements and observables in Lorentzian (2+1)-gravity - 07/2008 Department of Mathematics, University of Pavia
Flat Three-dimensional Lorentz spacetimes from the physics perspective - 05/2008 Department of Mathematics, University of York
(2+1)-gravity as a toy model for quantum gravity - 05/2008 Department of Mathematical Physics, NUI Maynooth
Quantum Gravity in (2+1) dimensions - 05/2008 Department of Physics and Engineering Physics,
University of Saskatchewan
3d gravity as a toy model for quantum gravity - 04/2008 Field Theory and gravitation group,
Instituto de Ciencias Nucleares, UNAM
Geometry and Wilson loops in (2+1)-dimensional gravity - 01/2008 LMPT, University of Tours
Geometrical (2+1)-gravity and the Chern-Simons formulation:
spacetime geometry, physical observables and the cosmological constant - 01/2008 Courant Research Center, University of Göttingen
Geometrical (2+1)-gravity and the Chern-Simons formulation:
spacetime geometry, physical observables and the cosmological constant - 12/2007 DESY string theory group, Hamburg
Geometrical (2+1)-dimensional gravity and the Chern-Simons formulation:
spacetime geometry and physical observables - 12/2007 Centro de Matematica da Universidade do Porto
Observables and spactime geometry in (2+1)-dimensional gravity - 05/2007 LPTA, University Montpellier 2
The cosmological constant in 3d gravity: a unified approach - 05/2007 CPT, Luminy, Marseille
The cosmological constant in 3d gravity: a unified approach - 03/2007 Gravity and Particles seminar,
School of mathematical Sciences, The University of Nottingham
A unified approach to 3d gravity: the cosmological constant as a deformation parameter - 12/2006 Max Planck Institute for Gravitational Physics, Golm
Observables and spacetime geometry in (2+1)-dimensional gravity - 12/2005 – 02/2006 research visit
Max Planck Institute for Gravitational Physics, Golm - 01/2004 Spinoza Institute, Utrecht University
Phase space and Quantization of (2+1)-dimensional gravity
in the Chern-Simons formulation - 01/2004 Perimeter Institute for Theoretical Physics, Waterloo, Canada
Phase space and Quantization of (2+1)-dimensional gravity in the Chern-Simons formulation - 03/2003 North British Mathematical Physics Seminar, University of York
Poisson structure and symmetry in the Chern-Simons formulation of (2+1)-dimensional gravity - 12/2002 Seminar on Fundamental Interactions,
Department of Physics, Freiburg University
The phase space of (2+1)-dimensional gravity as a Chern-Simons gauge theory - 12/2001 Max Planck Institute for Gravitational Physics, Golm
Algebraic quantization of the closed, bosonic string - 09/2001 Edinburgh Mathematical Physics Group Seminar
Algebraic quantization of the closed, bosonic string