Projects per year
Willing to supervise doctoral students
Projects available in
Averaging and Homogenisation for PDE;
Infinite-dimensional dynamics: PDEs and lattice ODEs
Many particle dynamics and derivation of kinetic equations
The main goal of my research is to develop rigorous mathematical methods to understand and describe the dynamical (temporal) behaviour of solutions of partial differential equations and other infinite-dimensional dynamical systems. The studied equations are motivated by models in the physical sciences, where the aim is a mathematically rigorous analysis of model problems to achieve a proper and lasting understanding of structure and effects.
In particular I am interested in equations with additional properties like dependence on fast scales or broken symmetries. A key question is to identify some limiting description, when e.g. the period of the fast scale tending to zero in averaging or homogenisation. Then qualitative differences (e.g. pinning, splitting of separatrices) between the various systems are studied. The final aim is to give a quantitative description of effects causing the differences through rigorous error bounds.
There are three related areas of my research.
- Averaging and homogenisation aims at the description of partial differential equations with fast spatial and/or fast temporal scales, these break the symmetry in autonomous or homogeneous equations.
- Dynamics of waves: The understanding of existence, stability and behaviour of travelling waves is a prime example of dynamical behaviour in partial differential equations and discrete lattice equations.
- Deriving continuum equations from atomistic equations: This research aims at the basic question how equations on different scales can have fundamentally different behaviour.
1/01/21 → 31/12/23
Project: Research council
1/10/20 → 31/03/24
Project: UK charity
1/09/05 → 31/08/10
Project: Research council
Matthies, K., 23 Feb 2021, In: Journal of Nonlinear Science. 31, 29 p., 27.
Research output: Contribution to journal › Article › peer-reviewOpen AccessFile2 Downloads (Pure)
Nonlinear and Nonlocal Eigenvalue Problems: variational existence, decay properties, approximation, and universal scaling limitsHerrmann, M. & Matthies, K., 2 Jul 2020, In: Nonlinearity. 33, 8, p. 4046–4074 29 p.
Research output: Contribution to journal › Article › peer-reviewOpen AccessFile13 Downloads (Pure)
Matthies, K. & Theil, F., 31 Dec 2019, In: SIAM Journal on Mathematical Analysis (SIMA). 51, 2, p. 1321–1348 28 p.
Research output: Contribution to journal › Article › peer-reviewOpen AccessFile2 Citations (Scopus)109 Downloads (Pure)
Matthies, K., 7 Mar 2019, In: Mathematics in Engineering. 1, 2, p. 281-308 28 p.
Research output: Contribution to journal › Article › peer-reviewOpen Access
Matthies, K., 1 Sep 2019, In: Transactions of the American Mathematical Society. 372, 5, p. 3425–3486 62 p.
Research output: Contribution to journal › Article › peer-reviewOpen AccessFile5 Citations (Scopus)46 Downloads (Pure)