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perturbation theory

  • 扰动理论：一种计算复杂函数近似值的方法，首先假设主导影响是唯一因素，然后对额外因素进行小的修正。

双语例句

  1. Perturbation Theory III. Transition Probability. Wavepacket. Degeneracy.
    微扰理论III。跃迁几率。波包。简并。
  2. In degenerate case, stationary perturbation theory becomes to a move complicated problem.
    在简并情况下，定态微扰理论变成一个比较复杂的问题。
  3. A new type of filter using degenerate mode is studied by applying the perturbation theory.
    本文应用微扰理论研究了一种利用简并模的新型滤波器。

网络短语

  • thermodynamic perturbation theory
    热力学微扰理论
  • Singular Perturbation Theory
    殊异扰动学；奇异摄动理论；等为主的奇异摄动理论
  • Cluster Perturbation Theory
    团簇微扰理论
  • many-body perturbation theory
    多体微扰理论；微扰理论方法；用多体微扰理论；多体微扰方法
  • finite perturbation theory
    有限微扰理论

同义词

perturbation method
[物]微扰理论；[自][天]摄动理论

英英释义

  • In quantum mechanics, perturbation theory is a set of approximation schemes directly related to mathematical perturbation for describing a complicated quantum system in terms of a simpler one. The idea is to start with a simple system for which a mathematical solution is known, and add an additional "perturbing" Hamiltonian representing a weak disturbance to the system.