SPACE–TIME VARIATION OF PHYSICAL CONSTANTS AND THE EQUIVALENCE PRINCIPLE

@article{Nordtvedt2002SPACETIMEVO,
  title={SPACE–TIME VARIATION OF PHYSICAL CONSTANTS AND THE EQUIVALENCE PRINCIPLE},
  author={Kenneth Nordtvedt},
  journal={International Journal of Modern Physics A},
  year={2002},
  volume={17},
  pages={2711-2715}
}
  • K. Nordtvedt
  • Published 10 August 2002
  • Physics
  • International Journal of Modern Physics A
Location-dependence of physical parameters such as the electromagnetic fine structure constant and Newton's G produce body accelerations which violate universality of free fall rates testable with laboratory and space experiments. Theoretically related cosmological time variation of these same parameters are also constrained by experiments such as lunar laser ranging, and these time variations produce accelerations of bodies relative to a preferred cosmological inertial frame. 
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References

SHOWING 1-10 OF 13 REFERENCES
Equivalence Principle and Clocks
String theory suggests the existence of gravitational-strength scalar fields ("dilaton" and "moduli") whose couplings to matter violate the equivalence principle. This provides a new motivation for
G-dot/G and a cosmological acceleration of gravitationally compact bodies.
TLDR
The binary pulsar system PSR 1913+16 is consequently found to be a somewhat less sensitive probe of a possible nonzero {ital {dot G}}/{ital G} than has been suggested.
General relativity as a cosmological attractor of tensor-scalar theories.
Tensor-scalar theories of gravity are shown to generically contain an attractor mechanism toward general relativity, with the redshift at the beginning of the matter-dominated era providing the
THE RISE AND FALL OF THE SPIN ALIGNMENT IN DEEP-INELASTIC REACTIONS
Both the magnitude and alignment of the transferred angular momentum in the reaction {sup 165}Ho + {sup 165}Ho have been measured as a function of Q value via continuum {gamma}-ray multiplicity and
Relativity parameters determined from lunar laser ranging.
TLDR
It is found that the Moon and Earth accelerate alike in the Sun's field and there is significant sensitivity to G\ifmmode \dot{}\else \.{}\fi{}/G through solar perturbations on the lunar orbit.
Physical Review
  • Art
    Nature
  • 1965
Principle and Clocks in Gravitational Waves and Experimental Gravity
  • Principle and Clocks in Gravitational Waves and Experimental Gravity
  • 2000
Phys. Rev. Lett
  • Phys. Rev. Lett
  • 1990
Phys. Rev. Lett
  • Phys. Rev. Lett
  • 1993
Phys. Rev. D
  • Phys. Rev. D
  • 1996
...
...