Action Minimising Fronts in General FPU-type Chains
Action Minimising Fronts in General FPU-type Chains
复制标题
一般 FPU 型链中的作用最小化前沿
DOI:
--
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发表时间:
2010
影响因子:
3
通讯作者:
M. Herrmann
中科院分区:
文献类型:
--
作者:
M. Herrmann
We study atomic chains with nonlinear nearest neighbour interactions and prove the existence of fronts (heteroclinic travelling waves with constant asymptotic states). Generalising recent results of Herrmann and Rademacher we allow for non-convex interaction potentials and find fronts with non-monotone profile. These fronts minimise an action integral and can only exists if the asymptotic states fulfil the macroscopic constraints and if the interaction potential satisfies a geometric graph condition. Finally, we illustrate our findings by numerical simulations.