Atomic and gravitational clocks

Details Atomic and gravitational clocks Atomic and gravitational clocks

Apr 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982natur.296..709c&link_type=abstract

Nature, vol. 296, Apr. 22, 1982, p. 709-713.

Mathematics

Logic

34

Atomic Clocks, Gravitation Theory, Quantum Electrodynamics, Cosmology, Equivalence, Gravitational Constant, Scale Effect, Synchronism

Scientific paper

Atomic and gravitational clocks are governed by the laws of electrodynamics and gravity, respectively. While the strong equivalence principle (SEP) assumes that the two clocks have been synchronous at all times, recent planetary data seem to suggest a possible violation of the SEP. Past analysis of the implications of an SEP violation on different physical phenomena revealed no disagreement. However, these studies assumed that the two different clocks can be consistently constructed within the framework. The concept of scale invariance, and the physical meaning of different systems of units, are now reviewed and the construction of two clocks that do not remain synchronous - whose rates are related by a non-constant function beta sub a - is demonstrated. The cosmological character of beta sub a is also discussed.

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