摂せつ動どう論ろん

noun

perturbation theory

Technical term in physics for a method of finding an approximate solution to a problem by starting from the exact solution of a related, simpler problem.

• 量りょう子し力りき学がくでは、摂せつ動どう論ろんを使つかって複ふく雑ざつな系けいのエネルギー準じゅん位いを近きん似じ的てきに計けい算さんする。

  In quantum mechanics, perturbation theory is used to approximately calculate the energy levels of complex systems.