8
views
0
recommends
+1 Recommend
0 collections
0
shares
• Record: found
• Abstract: found
• Article: found
Is Open Access

# Torsion-balance tests of the weak equivalence principle

Preprint

Bookmark
There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

### Abstract

We briefly summarize motivations for testing the weak equivalence principle and then review recent torsion-balance results that compare the differential accelerations of beryllium-aluminum and beryllium-titanium test body pairs with precisions at the part in $$10^{13}$$ level. We discuss some implications of these results for the gravitational properties of antimatter and dark matter, and speculate about the prospects for further improvements in experimental sensitivity.

### Most cited references3

• Record: found

### Experimental limits on any long range nongravitational interaction between dark matter and ordinary matter

(1993)
Bookmark
• Record: found
• Abstract: found
• Article: found
Is Open Access

### Space-based tests of gravity with laser ranging

(2006)
Existing capabilities in laser ranging, optical interferometry and metrology, in combination with precision frequency standards, atom-based quantum sensors, and drag-free technologies, are critical for the space-based tests of fundamental physics; as a result, of the recent progress in these disciplines, the entire area is poised for major advances. Thus, accurate ranging to the Moon and Mars will provide significant improvements in several gravity tests, namely the equivalence principle, geodetic precession, PPN parameters $$\beta$$ and $$\gamma$$, and possible variation of the gravitational constant $$G$$. Other tests will become possible with development of an optical architecture that would allow proceeding from meter to centimeter to millimeter range accuracies on interplanetary distances. Motivated by anticipated accuracy gains, we discuss the recent renaissance in lunar laser ranging and consider future relativistic gravity experiments with precision laser ranging over interplanetary distances.
Bookmark
• Record: found

### A new torsion pendulum for testing the limits of free-fall for LISA test masses

(2009)
Bookmark

### Author and article information

###### Journal
10 July 2012
10.1088/0264-9381/29/18/184002
1207.2442