Conference talks
Invited Talks at Workshops and Conferences
12/2024 Workshop ARTIN in Leeds
Dijkgraaf-Witten TQFT with defects
09/2024 60th Seminar Sophus Lie , Paderborn,
Dijkgraaf-Witten theory with defects
07/2024 Workshop Higher Structures and Field Theory and RHIND Seminar , Munich,
Dijkgraaf-Witten TQFT with defects
03/2024 Higher Categorical Tools for Quantum Phases of Matter , Perimeter Institute, Waterloo, Ontario, Canada,
Quantum double models and Dijkgraaf-Witten TQFT with defects
02/2024 Plenary Talk, ANZAMP Meeting 2024 , Katoomba, Australia,
Defects in Turaev-Viro state sums and Kitaev’s lattice model
10/2023 Topological Quantum Computation , ICMS, Edinburgh, UK,
Turaev-Viro state sums with defects
08/2023 Categorical Symmetries in Quantum Field Theories ,
Simons Collaboration on Global Categorical Symmetries, Les Diablerets, Switzerland
Turaev-Viro-Barrett-Westbury state sums with defects
08/2023 Higher Structures in Functorial Field Theory , CRC 1085, Regensburg
Turaev-Viro-Barrett-Westbury state sums with defects
03/2023 Interactions between Poisson Geometry and Quantisation
Lecture series on TQFTs with defects
03/2022 Main lecture, DPG spring meeting 2022 ,
State sum models with defects
09/2021 Corfu Summer Institute: Workshop on Quantum geometry, Field theory and Gravity
3d state sum models with defects
08/2021 GEOQUANT 2021 ,
Turaev-Viro state sums with defects
02/2021 Women at the Intersection of Mathematics and Physics , Perimeter Institute for Theoretical Physics,
State sum models with defects
11/2019 Emmy Noether Workshop: the structure of quantum spacetime ,
Perimeter Institute for Theoretical Physics
Ideal tetrahedra and their duals
09/2019 Women in Geometry and Topology ,
Plenary Talk , CRM, Barcelona
Ideal tetrahedra and their duals
06/2019 Defects in Topological and Conformal Field Theory
King’s College, London
Mapping class group actions in Kitaev lattice models
04/2019 Bayrischzell Workshop 2019
Bayrischzell
Mapping class group actions on quantised connections
07/2018 Gauge theories and applications
University of Regensburg
Graph Gauge theories with Hopf algebras
07/2018 3rd Bavarian Geometry and Topology Meeting ,
University of Regensburg
Ideal tetrahedra and their Duals in 3d geometry
07/2018 12th International ICMAT Summer School
on Geometry, Mechanics and Control
Santiago de Compostela
Lecture Series on Poisson-Lie Groups
04/2018 TQFT and Categorification
Cargèse, Corsica
Mapping class group actions in Hopf algebra gauge theory
02/2018 Workshop on Higher Gauge Theory ,
University of Leeds
Mapping class group actions in Kitaev models and Hopf algebra gauge theory
09/2017 100ème rencontre entre mathématiciens
et physiciens théoriciens ,
IRMA, Strasbourg
Ideal tetrahedra and their duals in 3d gravity
07/2017 Hopf Algebras in Kitaev’s Quantum Double Models
Perimeter Institute for Theoretical Physics,
Waterloo, Canada
Kitaev lattice models as a Hopf algebra gauge theory
06/2017 GQT Graduate School and Colloquium
Den Dolder, Netherlands
Graph gauge theories with Hopf algebras
06/2017 Meeting on Noncommutative geometry and gravity
ESI, Vienna
Poisson homogeneous spaces in (2+1) gravity
06/2017 Teichmueller theory and geometric structures on 3-dimensional manifolds ,
University of Luxembourg
Ideal tetrahedra and their duals in 3d model spacetimes
05/2017 Foundational and Structural Aspects of Gauge Theories ,
MITP, Mainz
Hopf algebra gauge theories on ribbon graphs
03/2017 Workshop on Quantum Topology ,
Université Lille 1
Kitaev lattice models as a Hopf algebra gauge theory
03/2017 Women at the Intersection of Mathematics and High Energy Physics
MITP, Mainz
Kitaev lattice models as a Hopf algebra gauge theory
08/2016 Quantum Structure of Spacetime and Gravity ,
COST network QSPACE , University of Belgrade
Lecture series on 3d gravity
07/2016 Classical and quantum symmetries in mathematics and physics ,
University of Jena
Hopf algebra symmetries in 3d gravity
07/2016 Modelling Topological Phases of Matter
University of Leeds
Kitaev lattice models as a Hopf algebra gauge theory
04/2016 QG^2: Quantum Groups in Quantum Gravity ,
University of Waterloo, Canada
Lecture Series: Mathematical approaches to 3d gravity
10/2016 Quantum Spacetime ’16 ,
Cost network QSPACE , Zakopane
Hopf algebra gauge theories and Kitaev models
01/2016 Colored Graphs and Random Tensors
LPT, Université Paris Sud, Orsay
Hopf algebras and ribbon graphs
10/2015 Higher topological quantum field theory and categorical quantum mechanics ,
ESI, Vienna
Gray categories with duals and their diagrammatical description
09/2015 Workshop on Noncommutative Field Theory and Gravity ,
Corfu, Greece
Hopf algebra gauge theory and Kitaev lattice models
06/2015 4th Seminar on Conformal Field theory ,
University of Darmstadt
Hopf algebra gauge theory from Kitaev lattice models
06/2015 2015 AMS-EMS-SPM International Meeting
University of Porto
Topological lattice models as quantum gauge theories
06/2014 93ème rencontre entre mathématiciens et physiciens théoriciens:
Riemann, la topologie et la physique
IRMA, Strasbourg
Generalised shear coordinates on moduli spaces of (2+1)-spacetimes
02/2014 Modern trends in topological quantum field theory ,
ESI, Vienna
Diagrams for Gray categories with duals
08/2013 Workshop on 3d gravity
University of Worclaw
Dynamical classical r-matrices in 3d gravity
09/2012 90ème rencontre entre physiciens théoriciens et mathématiciens:
Lie et Klein; le programme d’Erlangen et son impact en physique et en mathématique ,
IRMA, Strasbourg
Dirac gauge fixing and dynamical classical r-matrix symmetries in (2+1)-gravity
08/2012 XXI International Fall Workshop on Geometry and Physics
University of Burgos, Spain
Gauge fixing and dynamical r-matrices in Chern-Simons theory
09/2011 Workshop on Noncommutative Field Theory and Gravity ,
Corfu, Greece
Gauge fixing and dynamical r-matrices in (2+1)-gravity
06/2011 87ème rencontre entre physiciens théoriciens et mathématiciens:
Géométrie de Lorentz en mathématiques et en physique ,
Irma, Strasbourg
Causality in 3d-spacetimes with particles
03/2011 Main Lecture , DPG spring meeting 2011
KIT, Karlsruhe
Geometry and Observables in 3- dimensional (Quantum-) Gravity
09/2010 Geometry and Physics in Cracow
University of Cracow
Observables for 3d gravity from higher categories
09/2010 CLP 7 – Categories, Logics and Physics
University of Birmingham
Higher categories and observables for generalised Turaev-Viro models
09/2010 Walkshop on Mathematical Physics ,
University of Jena
Global geometry of Lorentzian 3-manifolds via lightlike geodesics
09/2010 Workshop on Quantum Groups ,
University of Caen-Basse Normandie
Quantum group symmetries and the torus universe
05/2010 Noncommutativity and Physics: Spacetime Quantum Geometry
Bayrischzell, Germany
Observables for quantum gravity from higher categories
04/2010 Géodycauserie III: Analysis, Geometry and Dynamics on Lorentz manifolds
ENS Lyon
Observers, time and measurements in 3d gravity
04/2010 Workshop QG10 ,
Max Planck Institute for the Physics of Complex Systems, Dresden
Gauge fixing and dynamical quantum group symmetries in (2+1)-gravity
12/2009 Géodycauserie II: Spacetimes with particles
University of Avignon
Observables associated to constant curvature spacetimes
12/2009 Transformation groups and Mathematical Physics
Hamburg University
Global geometry of Lorentzian 3-manifolds via lightlike geodesics
09/2009 2nd School and Workshop on Quantum Gravity and Quantum Geometry ,
Corfu, Greece
Geometry and observables in (2+1)-gravity
08/2009 Chern-Simons Gauge Theory: 20 years after
Hausdorff Center for Mathematics, Bonn
Getting Physics from (2+1)-gravity: What does an observer in 3d gravity see?
06/2009 XXV Max Born Symposium: The Planck Scale ,
University of Wroclaw
Getting Physics from (2+1)-gravity: measurements via lightrays
04/2009 Workshop on Gravity in Three Dimensions ,
ESI, Vienna
Cosmological measurements, time, and observables in (2+1)-gravity
07/2008 Noncommutative Deformations of Special Relativity ,
ICMS, Edinburgh
Quantum double and kappa-Poincaré symmetries in (2+1)-gravity and Chern-Simons theory
06/2008 QG2 2008: Quantum Geometry and Quantum Gravity
The University of Nottingham
3d loop quantum gravity and combinatorial quantisation
06/2008 Theory Canada 4 ,
Centre de Recherches Mathématiques, Montreal
Quantum double and kappa-Poincaré symmetries in 3d gravity and Chern-Simons theory
06/2007 Loops 07 ,
Morelia, Mexico
The cosmological constant in 3d gravity: towards a unified approach
07/2006 Noncommutative Geometry and Physics: Fundamental Structure of Space and Time ,
Isaac Newton Institute for Mathematical Sciences, Cambridge
(2+1)-dimensional gravity in the geometrical and in the Chern-Simons formulation
10/2005 Loops ’05 ,
Max Planck Institute for Gravitational Physics, Golm, Germany
Grafting and Poisson structure in (2+1)-gravity with Lambda=0
07/2005 Classical and quantum gravity in 3 dimensions ,
Scuola Normale Superiore, Pisa
Grafting and Poisson structure in (2+1)-gravity with Lambda=0
10/2004 Quantum Gravity in the Americas ,
Perimeter Institute for Theoretical Physics
Waterloo, Canada
Phase space and Quantization of (2+1)-dimensional gravity in the Chern-Simons formulation
06/2003 Geometry and physics of three-dimensional quantum gravity ,
ICMS, Edinburgh
On the quantisation of (2+1)-dimensional gravity in the Chern-Simons formulation