Journal ArticleDOI
Construction of a Complete Set of Independent Observables in the General Theory of Relativity
Reads0
Chats0
TLDR
In this paper, the Cauchy problem for obtaining an independent complete set of such quantities ("observables") is discussed, and it is also pointed out that the observables obtained may alternatively be viewed as the metric tensor in a special "gauge" (i.e., with a special coordinate condition).Abstract:
The construction of a complete set of quantities in general relativity, whose functional form is invariant under coordinate transformations, is indicated. The set obtained is highly redundant. The Cauchy problem for obtaining an independent complete set of such quantities ("observables") is therefore discussed. It is also pointed out that the observables obtained may alternatively be viewed as the metric tensor in a special "gauge" (i.e., with a special coordinate condition). This latter viewpoint may facilitate the quantization of general relativity.read more
Citations
More filters
Journal ArticleDOI
Time and interpretations of quantum gravity
TL;DR: In canonical quantization of gravity, the state functional does not seem to depend on time as discussed by the authors, and this hampers the physical interpretation of quantum gravity, which is problematic.
Book ChapterDOI
Canonical Quantization of Gravity
TL;DR: In Roman Catholic canon law permission of the bishop is required for the publication of any work on Sacred Scripture, dogmatic, moral or ascetical theology, or, in general, writings containing anything of peculiar significance to religion or morality as discussed by the authors.
Journal ArticleDOI
Observables, gravitational dressing, and obstructions to locality and subsystems
TL;DR: In this paper, it was shown that any operator with nonzero Poincar\'e charges, and in particular any compactly supported operator, in flat-spacetime quantum field theory must be gravitationally dressed once coupled to gravity, i.e., it must depend on the metric at arbitrarily long distances, and lower bounds on this nonlocal dependence.
Journal ArticleDOI
Relational Observables in Gravity: a Review
TL;DR: In this article, the authors present an overview on relational observables in gravity mainly from a loop quantum gravity perspective, and comment on their implications for quantum gravity. But their focus is on the complete observables, that en- code relations between dynamical fields.
Journal ArticleDOI
Quantum theory of gravitation
Abhay Ashtekar,Robert P. Geroch +1 more
TL;DR: In this paper, a review of the attempts to obtain a quantum theory of gravitation is presented, and the essential ideas of those programmes on which extensive work has been done are discussed.