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2009-10-13

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Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/131488

Revisiting observables in generally covariant theories in the light of gauge fixing methods

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https://doi.org/10.1103/PhysRevD.80.084015

Abstract

We derive for generally covariant theories the generic dependency of observables on the original fields, corresponding to coordinate-dependent gauge fixings. This gauge choice is equivalent to a choice of intrinsically defined coordinates accomplished with the aid of spacetime scalar fields. With our approach we make full contact with, and give a new perspective to, the "evolving constants of motion" program. We are able to directly derive generic properties of observables, especially their dynamics and their Poisson algebra in terms of Dirac brackets, extending earlier results in the literature. We also give a new interpretation of the observables as limits of canonical maps.

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Educació integral, Partícules (Matèria)

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Integral education, Particles

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Articles publicats en revistes (Física Quàntica i Astrofísica)
Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB))

Citation

PONS RÀFOLS, Josep Maria, SALISBURY, D. C. and SUNDERMEYER, K. A. Revisiting observables in generally covariant theories in the light of gauge fixing methods. Physical Review D. 2009. Vol. 80, num. 8, pags. 084015. ISSN 1550-7998. [consulted: 12 of June of 2026]. Available at: https://hdl.handle.net/2445/131488

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