Editing Background independence (section)

{{Short description|Concept of universality in physical science}}
'''Background independence''' is a condition in [[theoretical physics]] that requires the defining equations of a theory to be independent of the actual shape of the [[spacetime]] and the value of various [[field (physics)|field]]s within the spacetime. In particular this means that it must be possible not to refer to a specific [[coordinate system]]—the theory must be [[coordinate-free]]. In addition, the different spacetime configurations (or backgrounds) should be obtained as different solutions of the underlying equations.