Posts

Diagonalising a Quadratic Fermion Hamiltonian

My Publications

• D. E. Stiegemann. “Approximating diffeomorphisms by elements of Thompson’s groups $F$ and  $T$”. Morfismos 23, 2 (2019), pp. 1–10. 🔗 Article PDF. arXiv: 1810.11041 [math-ph].
• T. J. Osborne and D. E. Stiegemann. “Dynamics for holographic codes”. J. High Energ. Phys. 2020, 154 (2020). DOI: 10.1007/JHEP04(2020)154. arXiv: 1706.08823 [quant-ph].

Preprints

• T. J. Osborne, D. E. Stiegemann, and R. Wolf. “The $F$-Symbols for the $H3$ Fusion Category” (2019). arXiv: 1906.01322 [math.CT].
• T. J. Osborne and D. E. Stiegemann. “Quantum fields for unitary representations of Thompson’s groups $F$ and $T$” (2019). arXiv: 1903.00318 [math-ph].
• K. Beer, D. Bondarenko, A. Hahn, M. Kalabakov, N. Knust, L. Niermann, T. J. Osborne, K. Schridde, S. Seckmeyer, D. E. Stiegemann, and R. Wolf. “From categories to anyons: a travelogue” (2018). arXiv: 1811.06670 [quant-ph].

Theses

• “Thompson Field Theory”. Dissertation. Leibniz Univ. Hannover, 2019. DOI: 10.15488/5127. arXiv: 1907.08442 [math-ph]. Supervisor: Tobias J. Osborne
• “Many-Body Localization and Spectral Theory”. Master thesis. Leibniz Univ. Hannover, 2015. Supervisors: Tobias J. Osborne, Pieter Naaijkens
• “Lieb-Robinson Bounds and Coarse Geometry”. Bachelor thesis. Leibniz Univ. Hannover, 2013. Supervisors: Reinhard F. Werner, Pieter Naaijkens

Recorded Talks

• “Dynamics for holographic codes”. Talk at QIP in Delft (2018). 🎬 Video available at tudelft.nl.
• Review of a paper on many-body localisation. Talk in the seminar of the QIG Hannover (2016). 🎬 Video available at youtube.com.

Software

• TriCats. A Mathematica package to perform calculations in trivalent tensor categories. Available at github.com.

About Me

My name is Deniz Stiegemann, and I'm a quantum information scientist at the University of Queensland in Brisbane, Australia. I currently work in the group of Tom Stace. Previously, I completed my doctorate at Leibniz Universität Hannover, Germany, under the supervision of Tobias Osborne.

My name is pronounced /ˌdɛnɪs ˈʃtiːgəman/.