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Deutsche Physikalische Gessellschaft IOP Institute of Physics

Satellite Eötvös test of the weak equivalence principle for zero-point vacuum energy

J W Moffat1,2 and G T Gillies3

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An Eötvös experiment to test the weak equivalence principle (WEP) for zero-point vacuum energy is proposed using a satellite. Following the suggestion of Ross for a terrestrial experiment of this type, the acceleration of a spherical test mass of aluminium would be compared with that of a similar test mass made from another material. The estimated ratio of the zero-point vacuum energy density inside the aluminium sphere to the rest mass energy density is ~1.6×10-14, which would allow a 1% resolution of a potential WEP violation observed in a satellite mission test that had a baseline sensitivity to WEP violations of ~10-16. An observed violation of the WEP for vacuum energy density would constitute a significant clue as to the origin of the cosmological constant and the source of dark energy, and test a recently proposed resolution of the cosmological constant problem, based on a model of nonlocal quantum gravity and quantum field theory.


PACS

98.80.Qc Quantum cosmology

98.80.Es Observational cosmology (including Hubble constant, distance scale, cosmological constant, early Universe, etc)

04.62.+v Quantum fields in curved spacetime

04.60.-m Quantum gravity

Subjects

Gravitation and cosmology

Astrophysics and astroparticles

Dates

Issue 1 (November 2002)

Received 13 August 2002

Published 14 November 2002



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