Interpolating vector fields for near identity maps and averaging
Interpolating vector fields for near identity maps and averaging
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为近恒等映射插值向量场并求平均值
DOI:
10.1088/1361-6544/aacb8e
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发表时间:
2018
期刊:
影响因子:
1.7
通讯作者:
Gelfreich V
中科院分区:
文献类型:
--
作者:
Gelfreich V
For a smooth near identity map, we introduce the notion of an interpolating vector field written in terms of iterates of the map. Our construction is based on Lagrangian interpolation and provides an explicit expression for autonomous vector fields which approximately interpolate the map. We study properties of the interpolating vector fields and explore their applications to the study of dynamics. In particular, we construct adiabatic invariants for symplectic near identity maps. We also introduce the notion of a Poincaré section for a near identity map and use it to visualise dynamics of four-dimensional maps. We illustrate our theory with several examples, including the Chirikov standard map, a volume-preserving map and a symplectic map in dimension four. The last example is motivated by the theory of Arnold diffusion.
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DOI:
--
发表时间:
2013
期刊:
影响因子:
--
作者:
C. Efthymiopoulos;M. Harsoula
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DOI:
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2000
期刊:
影响因子:
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C. Simó
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期刊:
影响因子:
--
作者:
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影响因子:
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作者:
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通讯作者:
Ketzmerick, Roland
影响因子:
2.1
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