Preprints

• Modular categories as representations of the 3-dimensional bordism 2-category (with Chris Douglas, Chris Schommer-Pries and Jamie Vicary), Sep 2015.

• Extended 3-dimensional bordism as the theory of modular objects (with Chris Douglas, Chris Schommer-Pries and Jamie Vicary), Nov 2014.

• Quasistrict symmetric monoidal 2-categories via wire diagrams, Sep 2014.

Published

• Fusion categories via string diagrams,
  Communications in Contemporary Mathematics, to appear (2015). [arXiv]

• The Geometry of Unitary 2-Representations of Finite Groups and their 2-Characters,
  Applied Categorical Structures, Vol 19, Issue 1, pp 175-232 (2011). [arXiv]

Theses

• Flow equations for Hamiltonians from Continuous Unitary Transformations
  Masters thesis in Theoretical Physics, Stellenbosch, 2003.

• Categorical Aspects of Topological Quantum Field Theories
  Masters thesis in Theoretical Physics, Utrecht University, 2005.

• On unitary 2-representations of finite groups and topological quantum field theory
  PhD thesis in Pure Mathematics, University of Sheffield, 2009

Older physics publications

• Non-perturbative flow equations from running expectation values (with FG Scholtz, HB Geyer), Physics Review Letters 91 (2003).

• Mode identification in the delta-Scuti star 1 Mon (with L. A. Balona et al)
  Monthly notices of the Royal Astronomical Society, Vol 321 Issue 2, pg 239-246 (2001).