Issue
EPL
Volume 80, Number 4, November 2007
Article Number 40007
Number of page(s) 3
Section General
DOI http://dx.doi.org/10.1209/0295-5075/80/40007
Published online 23 October 2007
EPL, 80 (2007) 40007
DOI: 10.1209/0295-5075/80/40007

LARES/WEBER-SAT and the equivalence principle

L. Iorio

Viale Unità di Italia 68, 70125, Bari, Italy

lorenzo.iorio@libero.it

received 13 June 2007; accepted in final form 26 September 2007; published November 2007
published online 23 October 2007

Abstract
It has often been claimed that the proposed Earth artificial satellite LARES/WEBER-SAT -whose primary goal is, in fact, the measurement of the general relativistic Lense-Thirring effect at a some percent level- would allow greatly improving, among (many) other things, the present-day (10-13) level of accuracy in testing the equivalence principle as well. Recent claims point towards even two orders of magnitude better, i.e. 10-15. In this letter we show that such a goal is, in fact, unattainable by many orders of magnitude being, instead, the achievable level $\approx$ 10-9.

PACS
04.80.-y - Experimental studies of gravity.
04.80.Cc - Experimental tests of gravitational theories.
91.10.Sp - Satellite orbits.

© Europhysics Letters Association 2007