Westman, Hans and Sonego, Sebastiano (2007) Events and observables in generally invariant spacetime theories. [Preprint]

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Abstract

We address the problem of observables in generally invariant spacetime theories such as Einstein's general relativity. Using the refined notion of an event as a "point-coincidence" between scalar fields that completely characterise a spacetime model, we propose a generalisation of the relational local observables that does not require the existence of four everywhere invertible scalar fields. The collection of all point-coincidences forms in generic situations a four-dimensional manifold, that is naturally identified with the physical spacetime.

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Item Type:	Preprint
Creators:	Creators Email ORCID Westman, Hans Sonego, Sebastiano
Additional Information:	Also available at the LANL archive; code 0708.1825 [gr-qc]
Keywords:	Spacetime; Events; General covariance; Observables; Hole argument
Subjects:	Specific Sciences > Physics > Relativity Theory
Depositing User:	Sebastiano Sonego
Date Deposited:	22 Aug 2007
Last Modified:	07 Oct 2010 15:15
Item ID:	3473
Subjects:	Specific Sciences > Physics > Relativity Theory
Date:	August 2007
URI:	https://philsci-archive.pitt.edu/id/eprint/3473

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