Perturbatiivne

Perturbatiivne, also spelled perturbative, is a term used in various fields of science and mathematics to describe a method or approach that involves small changes or perturbations to a system. The term originates from the Latin word "perturbare," meaning "to disturb" or "to shake up." In physics, perturbative methods are used to solve complex problems by starting with a simpler, known solution and then applying small corrections or perturbations to account for the additional complexity. This approach is particularly useful in quantum mechanics, where it is used to calculate the behavior of particles in a potential field. In mathematics, perturbative techniques are employed in the study of dynamical systems, where small changes in initial conditions can lead to significant differences in the long-term behavior of the system. The effectiveness of perturbative methods depends on the system's sensitivity to small changes and the accuracy of the initial approximation.