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11 papers · 2 filters
On the constraint algebra of quantum gravity in the loop representation
Bernd Bruegmann
Although an important issue in canonical quantization, the problem of representing the constraint algebra in the loop representation of quantum gravity has received little attentio…
Comment on the chaotic singularity in some magnetic Bianchi VI cosmologies
Beverly K. Berger
Description of the magnetic Bianchi VI cosmologies of LeBlanc, Kerr, and Wainwright in the formalisms both of Belinskii, Khalatnikov, and Lifshitz, and of Misner allows qualita…
Making quantum gravity calculable
R. Loll
We describe recent attempts at discretizing canonical quantum gravity in four dimensions in terms of a connection formulation. This includes a general introduction, a comparison be…
New limits on the violation of the Strong Equivalence Principle in strong field regimes
Norbert Wex
The Strong Equivalence Principle (SEP) demands, besides the validity of the Einstein Equivalence Principle, that all self-gravitating bodies feel the same acceleration in an extern…
Long Range Effects of Cosmic String Structure
Bruce Allen, Bernard S. Kay, Adrian C. Ottewill
We combine and further develop ideas and techniques of Allen \& Ottewill, Phys. Rev.D, {\bf 42}, 2669 (1990) and Kay \& Studer Commun. Math. Phys., {\bf 139}, 103 (1991) for calcul…
Solutions of the Einstein equations with matter
Alan D. Rendall
Recent results on solutions of the Einstein equations with matter are surveyed and a number of open questions are stated. The first group of results presented concern asymptoticall…