Back-reaction

This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. Find sources: "Back-reaction" – news · newspapers · books · scholar · JSTOR (April 2017) (Learn how and when to remove this message)

In theoretical physics, back-reaction (or backreaction) is often necessary to calculate the self-consistent behaviour of a particle or an object in an external field.