"The Confrontation between General Relativity and Experiment"
Clifford M. Will 

The Confrontation between General Relativity and Experiment

Clifford M. Will 
Department of Physics
University of Florida
Gainesville FL 32611, U.S.A.

'External link'
Major update of lrr-2006-3 (see article history and change log for details).


The status of experimental tests of general relativity and of theoretical frameworks for analyzing them is reviewed and updated. Einstein’s equivalence principle (EEP) is well supported by experiments such as the Eötvös experiment, tests of local Lorentz invariance and clock experiments. Ongoing tests of EEP and of the inverse square law are searching for new interactions arising from unification or quantum gravity. Tests of general relativity at the post-Newtonian level have reached high precision, including the light deflection, the Shapiro time delay, the perihelion advance of Mercury, the Nordtvedt effect in lunar motion, and frame-dragging. Gravitational wave damping has been detected in an amount that agrees with general relativity to better than half a percent using the Hulse–Taylor binary pulsar, and a growing family of other binary pulsar systems is yielding new tests, especially of strong-field effects. Current and future tests of relativity will center on strong gravity and gravitational waves.

Keywords: Tests of relativistic gravity, Theories of gravity, Post-Newtonian limit, Gravitational radiation

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