Constraints on the Long-Range Properties of Gravity from Weak Gravitational Lensing

  title={Constraints on the Long-Range Properties of Gravity from Weak Gravitational Lensing},
  author={Martin White and Christopher S. Kochanek},
  journal={The Astrophysical Journal},
Weak gravitational lensing provides a means of testing the long-range properties of gravity. Current measurements are consistent with standard Newtonian gravity and inconsistent with substantial modifications on megaparsec scales. The data allow long-range gravity to deviate from a 1/r potential only on scales where standard cosmology would use normal gravity, but be dominated by dark matter. Thus, abnormal gravity theories must introduce two fine-tuning scales (an inner scale to explain flat… 

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