Can one have a universal time in general relativity?

Details Can one have a universal time in general relativity? Can one have a universal time in general relativity?

Apr 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991foph...21..459r&link_type=abstract

Foundations of Physics, Volume 21, Issue 4, pp.459-472

Physics

1

Scientific paper

The rest-frame of the universe determines a universal, or absolute time, that given by a clock at rest in it. The question is raised whether one can have a satisfactory universal time in general relativity if a gravitational field is present, i.e., whether there are coordinates such that the coordinate time is the time given everywhere by a clock at rest and they provide the correct description of our everyday experience. Several attempts are made to find such coordinates, but the results are unsatisfactory. The question is still open, but it may be that there is no significance to such a universal time in general relativity, because to have a clock at rest in a gravitational field requires nongravitational forces.

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