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Phase transitions and bump solutions of the Keller-Segel model with volume exclusion

Abstract:
We show that the Keller-Segel model in one dimension with Neumann boundary conditions and quadratic cellular diffusion has an intricate phase transition diagram depending on the chemosensitivity strength. Explicit computations allow us to find a myriad of symmetric and asymmetric stationary states whose stability properties are mostly studied via free energy decreasing numerical schemes. The metastability behavior and staircased free energy decay are also illustrated via these numerical simulations.
Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1137/19M125827X

Authors


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Institution:
University of Oxford
Division:
MPLS
Department:
Mathematical Institute
Role:
Author


Publisher:
Society for Industrial and Applied Mathematics
Journal:
SIAM Journal on Applied Mathematics More from this journal
Volume:
80
Issue:
1
Pages:
232-261
Publication date:
2020-01-16
Acceptance date:
2019-10-28
DOI:
EISSN:
1095-712X
ISSN:
0036-1399


Language:
English
Keywords:
Pubs id:
1098217
Local pid:
pubs:1098217
Deposit date:
2020-04-07

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