Hittmeir, S;
Kanzler, L;
Manhart, A;
Schmeiser, C;
(2021)
Kinetic modelling of colonies of myxobacteria.
Kinetic and Related Models
, 14
(1)
pp. 1-24.
10.3934/krm.2020046.
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Abstract
A new kinetic model for the dynamics of myxobacteria colonies on flat surfaces is derived formally, and first analytical and numerical results are presented. The model is based on the assumption of hard binary collisions of two different types: alignment and reversal. We investigate two different versions: a) realistic rod-shaped bacteria and b) artificial circular shaped bacteria called Maxwellian myxos in reference to the similar simplification of the gas dynamics Boltzmann equation for Maxwellian molecules. The sum of the corresponding collision operators produces relaxation towards nematically aligned equilibria, i.e. two groups of bacteria polarized in opposite directions. For the spatially homogeneous model a global existence and uniqueness result is proved as well as exponential decay to equilibrium for special initial conditions and for Maxwellian myxos. Only partial results are available for the rod-shaped case. These results are illustrated by numerical simulations, and a formal discussion of the macroscopic limit is presented.
| Type: | Article |
|---|---|
| Title: | Kinetic modelling of colonies of myxobacteria |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.3934/krm.2020046 |
| Publisher version: | https://doi.org/10.3934/krm.2020046 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Myxobacteria, binary collisions, kinetic model, decay to equilibrium, macroscopic limit. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Mathematics |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10122434 |
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