Fachbereich Mathematik

Dr. Oliver Siebert

Contact Information

Dr. Oliver Siebert
Universität Tübingen
Fachbereich Mathematik
AB Mathematische Physik
Auf der Morgenstelle 10
72076 Tübingen

Raum: C5 P05
Tel: +49 (0)7071 29 76696
E-Mail: oliver.siebert at uni-tuebingen.de


Winter Term 2023/24

  • Exercise Analysis 3

Summer Term 2023

Winter Term 2022/23

Summer Term 2022

Winter Term 2021/22


    Research Interests

    • Models of non-relativistic QED
    • Many body quantum mechanics
    • Open quantum systems

    Publications and Preprints

    1. (with B. Hinrichs and M. Lemm) On Lieb-Robinson bounds for a class of continuum fermionsarXiv:2310.17736
    2. (with D. Hasler and B. Hinrichs) Non-Fock Ground States in the Translation-Invariant Nelson Model Revisited Non-Perturbatively , J. Funct. Anal. (2024): 110319arXiv:2302.06998
    3. (with D. Hasler) Ground States for Infrared Renormalized Translation-Invariant Non-Relativistic QED, Ann. Henri Poincaré (2024), arXiv:2207.09559
    4. (with M. Lemm) Thermal Area Law for Lattice Bosons, Quantum 7, 1083, arXiv:2207.07760
    5. (with M. Lemm) Bose-Einstein condensation on hyperbolic spaces, J. Math. Phys. 63, 081903 (2022), arXiv:2202.01538
    6. (with D. Hasler and B. Hinrichs) FKN Formula and Ground State Energy for the Spin Boson Model with External Magnetic FieldAnn. Henri Poincaré 23(8): 2819-2853, 2022arXiv:2106.08659.
    7. (with D. Hasler and B. Hinrichs) Correlation Bound for a One-Dimensional Continuous Long-Range Ising ModelStochastic Process. Appl. 146 (2022)arXiv:2104.03013.
    8. (with D. Hasler and B. Hinrichs) On Existence of Ground States in the Spin Boson Model Commun. Math. Phys. 388, 419–433 (2021), arXiv:2102.13373.
    9. (with D. Hasler) Ground States for translationally invariant Pauli-Fierz Models at zero Momentum, J. Funct. Anal. 284.1 (2023): 109725, arXiv:2007.01250.
    10. (with D. Hasler) Thermal Ionization for Short-Range Potentials , J Stat Phys 182, 17 (2021), arXiv:2006.10874.

    Short CV

    since 10/2021 Research assistant / Postdoc, Universität Tübingen (group of Marius Lemm)
    04/2021 - 09/2021 Postdoctoral Researcher, EPFL (group of Marius Lemm)
    10/2015 - 03/2021

    Research assistant / PhD student, FSU Jena (supervision: David Hasler)

    Thesis: On thermal ionization for open quantum systems

    10/2014 - 08/2015 Master of Science in mathematics with minor field physics, FSU Jena
    10/2013 - 10/2014 Master studies in mathematics, WWU Münster
    10/2010 - 07/2013 Bachelor of Science in mathematics with minor field physics, FSU Jena