富饶
发表于 2025-3-28 17:10:03
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invert
发表于 2025-3-28 22:29:33
The Adiabatic Invariance of the Action Variables,We shall first use an example to explain the concept of adiabatic invariance. Let us consider a “super ball” of mass ., which bounces back and forth between two walls (distance .) with velocity ... Let gravitation be neglected, and the collisions with the walls be elastic. If .. denotes the average force onto each wall, then we have
Lumbar-Spine
发表于 2025-3-29 02:50:24
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苦恼
发表于 2025-3-29 03:23:19
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拱形面包
发表于 2025-3-29 09:02:16
Superconvergent Perturbation Theory, KAM Theorem (Introduction),Here we are dealing with an especially fast converging perturbation series, which is of particular importance for the proof of the KAM theorem (cf. below).
indecipherable
发表于 2025-3-29 12:11:48
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鞭打
发表于 2025-3-29 17:32:52
Examples for Calculating Path Integrals,We now want to compute the kernel .) for a few simple Lagrangians. We have already found for the one-dimensional case that . with
EWE
发表于 2025-3-29 22:43:24
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厚脸皮
发表于 2025-3-30 00:45:28
Yichao Lu,Ruihai Dong,Barry Smythparticular, we want to investigate the conditions under which a path is a minimum of the action and those under which it is merely an extremum. For illustrative purposes we consider a particle in two-dimensional real space. If we parametrize the path between points . and . by ϑ, then Jacobi’s principle states:
和平主义者
发表于 2025-3-30 06:49:52
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