Defectlike structures and localized patterns in the cubic-quintic-septic Swift-Hohenberg equation.
Defectlike structures and localized patterns in the cubic-quintic-septic Swift-Hohenberg equation.
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三次五次脓毒症 Swift-Hohenberg 方程中的缺陷状结构和局部模式
DOI:
10.1103/physreve.100.012204
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发表时间:
2019
期刊:
影响因子:
--
通讯作者:
D. Wetzel
中科院分区:
文献类型:
--
作者:
E. Knobloch;H. Uecker;D. Wetzel
We study numerically the cubic-quintic-septic Swift-Hohenberg (SH357) equation on bounded one-dimensional domains. Under appropriate conditions stripes with wave numberbifurcate supercritically from the zero state and form S-shaped branches resulting in bistability between small and large amplitude stripes. Within this bistability range we find stationary heteroclinic connections or fronts between small and large amplitude stripes, and demonstrate that the associated spatially localized defectlike structures either snake or fall on isolas. In other parameter regimes we also find heteroclinic connections to spatially homogeneous states and a multitude of dynamically stable steady states consisting of patches of small and large amplitude stripes with different wave numbers or of spatially homogeneous patches. The SH357 equation is thus extremely rich in the types of patterns it exhibits. Some of the features of the bifurcation diagrams obtained by numerical continuation can be understood using a conserved quantity, the spatial Hamiltonian of the system.
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DOI:
10.1103/physreve.100.031102
发表时间:
2019
期刊:
Physical review. E
影响因子:
--
作者:
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通讯作者:
T. Schneider
DOI:
--
发表时间:
2008
期刊:
Physical review. E, Statistical, nonlinear, and soft matter physics
影响因子:
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DOI:
--
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1998
期刊:
影响因子:
--
作者:
A. Spina;J. Toomre;E. Knobloch
通讯作者:
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影响因子:
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作者:
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