Background-Independence

Details Background-Independence Background-Independence

2011-06-05

arxiv.org/abs/1106.0920v1

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

Forthcoming in General Relativity and Gravitation

Scientific paper

Intuitively speaking, a classical field theory is background-independent if the structure required to make sense of its equations is itself subject to dynamical evolution, rather than being imposed ab initio. The aim of this paper is to provide an explication of this intuitive notion. Background-independence is not a not formal property of theories: the question whether a theory is background-independent depends upon how the theory is interpreted. Under the approach proposed here, a theory is fully background-independent relative to an interpretation if each physical possibility corresponds to a distinct spacetime geometry; and it falls short of full background-independence to the extent that this condition fails.

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