Stationary solutions with vacuum for a hyperbolic-parabolic chemotaxis model in dimension two
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| Main Authors: | , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866913654913368064 |
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| author | Hertrich, Sophia Huang, Tao Yépez, Diego Zhao, Kun |
| author_facet | Hertrich, Sophia Huang, Tao Yépez, Diego Zhao, Kun |
| contents | In this research, we study the existence of stationary solutions with vacuum to a hyperbolic-parabolic chemotaxis model with nonlinear pressure in dimension two that describes vasculogenesis. We seek solutions in the radial symmetric class of the whole space, in which the system will be reduced to a system of ODE's on $(0,\infty)$. The fundamental solutions to the ODE system are the Bessel functions of different types. We find two nontrivial solutions. One is formed by half bump (positive density region) starting at $r=0$ and a region of vacuum on the right. Another one is a full nonsymmetric bump away from $r=0$. These solutions bear certain resemblance to in vitro vascular network and the numerically produced structure by Gamba et al arXiv:cond-mat/0303468v1. We also show the nonexistence of full bump starting at $r=0$ and nonexistence of full symmetric bump away from $r=0$. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2501_10238 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Stationary solutions with vacuum for a hyperbolic-parabolic chemotaxis model in dimension two Hertrich, Sophia Huang, Tao Yépez, Diego Zhao, Kun Analysis of PDEs Classical Analysis and ODEs In this research, we study the existence of stationary solutions with vacuum to a hyperbolic-parabolic chemotaxis model with nonlinear pressure in dimension two that describes vasculogenesis. We seek solutions in the radial symmetric class of the whole space, in which the system will be reduced to a system of ODE's on $(0,\infty)$. The fundamental solutions to the ODE system are the Bessel functions of different types. We find two nontrivial solutions. One is formed by half bump (positive density region) starting at $r=0$ and a region of vacuum on the right. Another one is a full nonsymmetric bump away from $r=0$. These solutions bear certain resemblance to in vitro vascular network and the numerically produced structure by Gamba et al arXiv:cond-mat/0303468v1. We also show the nonexistence of full bump starting at $r=0$ and nonexistence of full symmetric bump away from $r=0$. |
| title | Stationary solutions with vacuum for a hyperbolic-parabolic chemotaxis model in dimension two |
| topic | Analysis of PDEs Classical Analysis and ODEs |
| url | https://arxiv.org/abs/2501.10238 |