1994/04/14 by C. G. Torre, Torre, C. G.
Physics and Astronomy · #FOS: Physical sciences #General Relativity and Quantum Cosmology (gr-qc) #gr-qc
paper · pdf · doi:10.48550/arxiv.gr-qc/9404029
Talk presented at the Lanczos Centenary Conference 3 pages, plain TeX
arxiv created 1994/04/14 · arxiv updated 2009/11/30
We present 2 recent results on the problems of time and observables in canonical gravity. (1) We cannot use parametrized field theory to solve the problem of time because, strictly speaking, general relativity is not a parametrized field theory. (2) We show that there are essentially no local observables for vacuum spacetimes.