A random partition of the 3-sphere. In high dimensions many properties of the N-sphere are counterintuitive. These properties are important for the understanding of  systems like e.g. the perceptron.

Stefan Landmann

Stefan Landmann

Institut für Physik
Carl-von-Ossietzky Universität Oldenburg
26111 Oldenburg, Germany

Room: W2 2-272
Tel.: +49 441 798 3098
E-mail: stefan.landmann'at'uni-oldenburg.de 

Scientific interests

I am using methods from the theory of disordered systems to understand emergent phenomena in complex systems like artificial neural networks or ecosystems.

Publications

  •  A simple regulatory architecture allows learning the statistical structure of a changing environment
    S. Landmann, c. M. Holmes and M. Tikhonov; 2020 (arXiv)

  •  Self-organized criticality in neural networks from activity-based rewiring
    S. Landmann, L. Baumgarten and S. Bornholdt; 2020 (arXiv)

  •  Large systems of random linear equations with non-negative solutions: Characterizing the solvable and unsolvable phase
    S. Landmann and A. Engel;
    Phys. Rev. E 101, 062119 (2020); (arXiv)

  •  On non-negative solutions to large systems of random linear equations
    S. Landmann and A. Engel;
    Physica A: Statistical Mechanics and its Applications 552, 122544 (2020); (arXiv)

  •  Systems of random linear equations and the phase transition in MacArthur's resource-competition model
    S. Landmann and A. Engel;
    EPL 124, 18004 (2018);  (arXiv)

Conference Contributions

  •  On non-negative solutions to large systems of random linear equations
    Poster, French-German WE-Heraeus-Seminar: "Novel Physics in Living Systems?", Roscoff, France
    September 2019
  •  On the phase transition in resource-competition models
    Poster and talk, Summer school: "Statistical Physics of Complex Systems", Palma de Mallorca, Spain
    July 2018
  •  Activity based self-organized criticality in a binary neural network model
    Poster, Workshop: “Dynamical Network States, Criticality and Cortical Function”, Delmenhorst, Germany
    March 2017
  •  Self-organized criticality in a binary neural network model with local rules
    Poster, DPG-Frühjahrstagung, Dresden (Annual Conference of the German Physical Society)
    March 2017
  •  Viscosity of confined two-dimensional Yukawa-Liquids
    Poster, DPG-Frühjahrstagung, Bochum (Annual Conference of the German Physical Society)
    March 2015

Teaching (tutorials)

  • 2019/20 Thermodynamik und Statistische Physik, Carl von Ossietzky Universität Oldenburg
  • 2018/19 Klassische Teilchen und Felder, Carl von Ossietzky Universität Oldenburg
  • 2017/18 Theoretische Mechanik, Universität Bremen
  • 2016 Theoretische Mechanik, Universität Leipzig
  • 2015 Elektrodynamik, Universität Leipzig
  • 2013 Mathematische Methoden der Physik 2, Friedrich-Schiller-Universität Jena
  • 2012/13 Mathematische Methoden der Physik 1, Friedrich-Schiller-Universität Jena
(Stand: 06.01.2021)