Source: wikibot/non-perturbative
= Non-perturbative
{wiki=Non-perturbative}
Non-perturbative refers to methods or phenomena in physics and mathematics that cannot be adequately described by perturbation theory. Perturbation theory is a technique used to find an approximate solution to a problem that is too complex to solve exactly; it typically involves starting from a known solution and adding small corrections due to interactions or changes in parameters.