Global phase diagrams of run-and-tumble dynamics: Equidistribution, waves, and blowup

Kyungkeun Kang, Arnd Scheel, Angela Stevens

Research output: Contribution to journalArticlepeer-review


For spatially one-dimensional run-and-tumble dynamics with mass conservation we develop a coarse phase diagram, that discriminates between global decay to equidistributed constant states, existence of spatially non-trivial waves, and finite time blowup of solutions. Motivated by counter-migrating ripples of high and low population density and fruiting body formation in myxobacteria, we identify phase boundaries as particular critical tumbling dynamics that allow for switching between these spatio-temporal phases upon slight changes in mass densities or parameter values.

Original languageEnglish
Pages (from-to)2128-2146
Number of pages19
Issue number6
Publication statusPublished - 2019 May 8

Bibliographical note

Publisher Copyright:
© 2019 IOP Publishing Ltd & London Mathematical Society.

All Science Journal Classification (ASJC) codes

  • Statistical and Nonlinear Physics
  • Mathematical Physics
  • Physics and Astronomy(all)
  • Applied Mathematics


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