In Craig Callender & Nick Huggett (eds.), Physics Meets Philosophy at the Planck Scale. Cambridge University Press. pp. 213--55 (2001)
Physicists who work on canonical quantum gravity will sometimes remark that the general covariance of general relativity is responsible for many of the thorniest technical and conceptual problems in their ﬁeld.1 In particular, it is sometimes alleged that one can trace to this single source a variety of deep puzzles about the nature of time in quantum gravity, deep disagreements surrounding the notion of ‘observable’ in classical and quantum gravity, and deep questions about the nature of the existence of spacetime in general relativity.
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Moderate Structural Realism About Space-Time.Michael Esfeld & Vincent Lam - 2006 - Synthese 160 (1):27 - 46.
Moderate Structural Realism About Space-Time.Michael Esfeld & Vincent Lam - 2007 - Synthese 160 (1):27-46.
Holism and Structuralism in (1) Gauge Theory.Holger Lyre - 2004 - Studies in History and Philosophy of Science Part B 35 (4):643-670.
Change in Hamiltonian General Relativity From the Lack of a Time-Like Killing Vector Field.J. Brian Pitts - 2014 - Studies in History and Philosophy of Science Part B: Studies in History and Philosophy of Modern Physics 47:68-89.
Three Denials of Time in the Interpretation of Canonical Gravity.Karim P. Y. Thébault - 2012 - Studies in History and Philosophy of Science Part B: Studies in History and Philosophy of Modern Physics 43 (4):277-294.
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