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arXiv · 1604.05415

On Types of Observables in Constrained Theories

Edward Anderson
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Abstract

The Kuchar observables notion is shown to apply only to a limited range of theories. Relational mechanics, slightly inhomogeneous cosmology and supergravity are used as examples that require further notions of observables. A suitably general notion of A-observables is then given to cover all of these cases. `A' here stands for `algebraic substructure'; A-observables can be defined by association with each closed algebraic substructure of a theory's constraints. Both constrained algebraic structures and associated notions of A-observables form bounded lattices.

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Edward Anderson. 2016-04-19. On Types of Observables in Constrained Theories. https://arxiv.org/abs/1604.05415

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