Earth's equivalence principle violating multipoles: more science from a robust violation signal in STEP

Details Earth's equivalence principle violating multipoles: more science from a robust violation signal in STEP Earth's equivalence principle violating multipoles: more science from a robust violation signal in STEP

Jul 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001cqgra..18.2467n&link_type=abstract

Classical and Quantum Gravity, Volume 18, Issue 13, pp. 2467-2473 (2001).

Computer Science

1

Scientific paper

Because of Earth's non-sphericity, compositional inhomogeneities and crustal topography, an equivalence principle violation seen in a STEP mission will include multipole fine structure produced by sources effectively independent of the Earth's monopole and quantitatively different from the gravitational multipole structure. If non-universality of gravitational free-fall occurs above STEP's detection threshold of 10-18, there is good chance (about 40%) that the monopole phenomenon will be robust - between 10-13 and 10-15 - permitting measurement of the fine structure which can yield ambiguity-breaking information about the absolute coupling strength of the newly discovered interaction.

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