Abstract
We investigate pattern formation by means of stochastic algorithms. We present three different approaches based on
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- i)
Active Brownian particles
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- ii)
Stochastic cellular automata
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- iii)
master-equation approach
We apply all three algorithms to a simple activator-inhibitor dynamics and show the emergence of spirals, moving and standing spots. The stochastic algorithms during the simulations were very stable and under some conditions faster than the numerical integration of their corresponding mean-field approximations. We also discuss several differences occurring due to the inclusion of fluctuations in the consideration.
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The animations and related publications are available at http://summa.physik.hu-berlin.de/~thomas/spots3d
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Hempel, H., Fricke, T., Mieth, M., Schimansky-Geier, L. (1996). Stochastics of pattern formation. In: Parisi, J., Müller, S.C., Zimmermann, W. (eds) Nonlinear Physics of Complex Systems. Lecture Notes in Physics, vol 476. Springer, Berlin, Heidelberg. https://doi.org/10.1007/BFb0105448
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DOI: https://doi.org/10.1007/BFb0105448
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