Goodness of ergodic adiabatic invariants

Goodness of ergodic adiabatic invariants
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遍历绝热不变量的优点

DOI:
10.1103/physrevlett.42.1628
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发表时间:
1979
影响因子:
8.6
通讯作者:
E. Ott
E. Ott
中科院分区:
物理与天体物理1区
文献类型:
--
作者:
E. Ott

文献摘要

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对于一个表现遍历运动的“慢"含时哈密顿系统,其哈密顿量等于常数的超曲面内的体积是绝热不变量。它表明,在常数的误差是扩散和规模为(tau/sub C//t)/sup 1/2/,其中tau/sub C/是遍历运动的一定的相关时间,和tau是时间尺度上的哈密顿量的变化。
For a ''slowly'' time-dependent Hamiltonian system exhibiting ergodic motion, the volume inside the hypersurface on which the Hamiltonian equals a constant is an adiabatic invariant. It is shown that the error in the constant is diffusive and scales as (tau/sub C//t)/sup 1/2/, where tau/sub C/ is a certain correlation time of the ergodic motion, and tau is the time scale over which the Hamiltonian changes.