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Dr Frank Rosler

Dr Frank Rosler

Marie Skłodowska-Curie Fellow

School of Mathematics


I am currently a Research Associate in Cardiff University. My research is supported by the EPSRC grant QUEST: Quantitative Estimates in Spectral Theory and Their Complexity (see ).

I am generally interested in the spectral theory of non-selfadjoint operators. And the approximation of spectra. Past projects involved pseudospectra of non-normal Schrödinger Operators and more general resolvent norm estimates of partial Differential operators. For more information, see my personal website.


I am delighted about my recent Marie Skłodowska Curie success for the project “Computational Complexity in Quantum Mechanics” (COCONUT):


Education and Degrees

  • 2018-present: Research Associate, School of Mathematics, Cardiff University, Cardiff, UK.
  • 2014-2018: PhD Mathematics, Dept of Mathematical Sciences, Durham University, Durham, UK.
    Topic: Spectral Theory of non-selfadjoint Schrödinger Operators and Homogenisation of PDEs in perforated domains.
  • 2011-2014: MSc Physics, Heidelberg University, Heidelberg, Germany.
    Thesis, Institute for Theoretical Physics, Heidelberg, Germany.
    Topic: Surface Operators in Chern-Simons Theory
  • 2008–2011: BSc Physics, Heidelberg University, Heidelberg, Germany.

    Thesis, Institute for Theoretical Physics, Heidelberg, Germany. Topic: Distributions and Wave-Front Set

Speaking engagements

  • Oct. 2019: Seminar Talk, University of Kent, Canterbury, UK.
  • Jun. 2019: Oral Presentation, Meeting of the GAMM activity group "Applied Operator Theory"
  • Nov. 2018: Seminar Talk, Imperial College London, UK.
  • Nov. 2018: Seminar Talk, Cambridge University, UK.
  • Jun. 2018: Seminar Talk, TU Dresden, Germany.
  • Mar. 2018: Oral presentation, GAMM annual meeting, Munich, Germany.
  • Jan. 2018: Seminar Talk, Philipps University of Marburg, Germany.
  • Nov. 2017: Seminar Talk, University of Bath, UK.
  • Sep. 2017: Oral presentation, ASPECT17, Trier, Germany.
  • Aug. 2017: Poster presentation, Modern Trends in Structure Forming Systems, Heidelberg, Germany.
  • Jun. 2017: Oral presentation, Mathematical aspects of the physics with non-self-adjoint operators, Marseille, France.
  • Jun. 2016:Poster presentation, 4th Scottish Partial Differential Equations Colloquium, Dundee, UK.
  • Oct. 2015: Seminar Talk, University of Nottingham, UK.
  • Oct. 2015: Oral presentation, Young Researchers Workshop on Spectral Theory, Bern, Switzerland.
  • May, 2015: Poster presentation, Pseudo-Hermitian Hamiltonians in Quantum Physics , Palermo, Italy.


Winter term 2019/20

Summer term 2018

Winter term 2017/18

Summer term 2017

  • Reading course on the Spectral Theorem for compact, bounded and unbounded selfadjoint operators on Hilbert spaces at the University of Freiburg.

Summer term 2016

Winter term 2016/17

Publications and Preprints