Gauss’s law test of gravity at short range

Moody, M. V.; Paik, Ho Jung

doi:10.1103/physrevlett.70.1195

Cited by 74 publications

(49 citation statements)

References 6 publications

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“…This device has recently been used to perform airborne surveys of geophysical mass anomalies [10] and to characterize the gravitational anomalies from man-made underground structures [11]. Higher sensitivity laboratory devices based on superconducting transducers have achieved significantly better sensitivities (< 0.1 E/Hz 1/2 ) [12,13]. However, these devices suffer from tare effects in the superconductors [14] and their reliance on cryogens.…”

Section: Introductionmentioning

confidence: 99%

Sensitive absolute-gravity gradiometry using atom interferometry

et al. 2002

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We report the demonstration of a sensitive absolute gravity gradiometer based on light-pulse atom interference techniques. The gradiometer consists of two absolute accelerometers operated in a differential mode. We report a differential acceleration sensitivity of 4 × 10 −9 g/Hz 1/2 and an inferred differential acceleration accuracy of less than 10 −9 g. This corresponds to a gravity gradient sensitivity of 4 E/Hz 1/2 (1 E = 10 −9 s −2 ) and an accuracy of better than 1 E for a 10 m separation between accelerometers. We demonstrate that the instrument can be used to detect nearby masses in a vibrationally noisy environment and characterize instrument sensitivity to spurious acceleration and rotation noise.

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Section: Introductionmentioning

confidence: 99%

Sensitive absolute-gravity gradiometry using atom interferometry

et al. 2002

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“…Here we describe a null experiment in which a specially configured torsion pendulum undergoing large-amplitude oscillations in proximity to a source mass also of special form, is potentially able to detect inverse square law violations approaching 10 −6 of standard gravity at a range around ten centimeters -nearly a two-order-of-magnitude improvement over the current empirical limit at that length scale (Moody and Paik, 1993). This improvement is accomplished by an experimental configuration that is only second-order sensitive to fabrication errors in pendulum and source mass, and not by a substantial reduction in dimensional tolerances.…”

Section: Experimental Approachmentioning

confidence: 99%

Gravitation physics at BGPL

Boynton¹,

Bonicalzi²,

Kalet³

et al. 2007

New Astronomy Reviews

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We report progress on a program of gravitational physics experiments using cryogenic torsion pendula undergoing large-amplitude torsion oscillation. This program includes tests of the gravitational inverse square law and of the weak equivalence principle. Here we describe our ongoing search for inverse-square-law violation at a strength down to 10 −5 of standard gravity. The low-vibration environment provided by the Battelle Gravitation Physics Laboratory (BGPL) is uniquely suited to this study.

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“…Our design goal has been either to detect or to place a 1-upper limit of ~2 10 -5 on for an interaction range around 12cm [3]. As indicated by the blue curve in Figure 1, this limit is roughly an order of magnitude lower than published limits at neighboring ranges between 100 μm and 10 m. [4], B Irvine [5], C Irvine [6], and D Maryland [7], with the projected constraint for this project. See also [8].…”

Section: Introductionmentioning

confidence: 96%

Was Newton right? A search for non-Newtonian behavior of weak-field gravity

Boynton

Moore

Newman

et al. 2014

EPJ Web of Conferences

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Abstract. Empirical tests of Einstein's metric theory of gravitation, even in the nonrelativistic, weak-field limit, could play an important role in judging theory-driven extensions of the current Standard Model of fundamental interactions. Guided by Galileo's work and his own experiments, Newton formulated a theory of gravity in which the force of attraction between two bodies is independent of composition and proportional to the inertia of each, thereby transparently satisfying Galileo's empirically informed conjecture regarding the Universality of Free Fall. Similarly, Einstein honored the manifest success of Newton's theory by assuring that the linearized equations of GTR matched the Newtonian formalism under "classical" conditions. Each of these steps, however, was explicitly an approximation raised to the status of principle. Perhaps, at some level, Newtonian gravity does not accurately describe the physical interaction between uncharged, unmagnetized, macroscopic bits of ordinary matter. What if Newton were wrong? Detecting any significant deviation from Newtonian behavior, no matter how small, could provide new insights and possibly reveal new physics. In the context of physics as an empirical science, for us this yet unanswered question constitutes sufficient motivation to attempt precision measurements of the kind described here. In this paper we report the current status of a project to search for violation of the Newtonian inverse square law of gravity.

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Gauss’s law test of gravity at short range

Cited by 74 publications

References 6 publications

Sensitive absolute-gravity gradiometry using atom interferometry

Sensitive absolute-gravity gradiometry using atom interferometry

Gravitation physics at BGPL

Was Newton right? A search for non-Newtonian behavior of weak-field gravity

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