Probing modified gravity with magnetically levitated resonators
Probing modified gravity with magnetically levitated resonators
We present an experimental procedure, based on Meissner effect levitation of neodymium ferromagnets, as a method of measuring the gravitational interactions between milligram masses. The scheme consists of two superconducting lead traps, with a magnet levitating in each trap. The levitating magnets behave as harmonic oscillators and, by carefully driving the motion of one magnet on resonance with the other, we find that it should easily be possible to measure the gravitational field produced by a 4 mg sphere, with the gravitational attraction from masses as small as 30 μg predicted to be measurable within a realistic measurement time frame. We apply this acceleration sensitivity to one concrete example and show the abilities of testing models of modified Newtonian dynamics.
Timberlake, Christopher
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Vinante, Andrea
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Shankar, F
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Lapi, Andrea
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Ulbricht, Hendrik
5060dd43-2dc1-47f8-9339-c1a26719527d
5 November 2021
Timberlake, Christopher
0620cbe2-aff4-444a-b420-b6a48a8b85dd
Vinante, Andrea
c60154c0-c24c-461e-8311-11555b3c846d
Shankar, F
b10c91e4-85cd-4394-a18a-d4f049fd9cdb
Lapi, Andrea
126b5f87-60fa-4a57-8b84-802d5ffb1f17
Ulbricht, Hendrik
5060dd43-2dc1-47f8-9339-c1a26719527d
Timberlake, Christopher, Vinante, Andrea, Shankar, F, Lapi, Andrea and Ulbricht, Hendrik
(2021)
Probing modified gravity with magnetically levitated resonators.
Physical Review D, 104 (10), [L101101].
(doi:10.1103/PhysRevD.104.L101101).
Abstract
We present an experimental procedure, based on Meissner effect levitation of neodymium ferromagnets, as a method of measuring the gravitational interactions between milligram masses. The scheme consists of two superconducting lead traps, with a magnet levitating in each trap. The levitating magnets behave as harmonic oscillators and, by carefully driving the motion of one magnet on resonance with the other, we find that it should easily be possible to measure the gravitational field produced by a 4 mg sphere, with the gravitational attraction from masses as small as 30 μg predicted to be measurable within a realistic measurement time frame. We apply this acceleration sensitivity to one concrete example and show the abilities of testing models of modified Newtonian dynamics.
Text
2110.02263
- Accepted Manuscript
More information
Accepted/In Press date: 6 October 2021
e-pub ahead of print date: 5 November 2021
Published date: 5 November 2021
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Publisher Copyright:
© 2021 American Physical Society.
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Local EPrints ID: 453223
URI: http://eprints.soton.ac.uk/id/eprint/453223
ISSN: 2470-0029
PURE UUID: 7272d8ea-b842-4684-86f8-05fc87fa09d0
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Date deposited: 11 Jan 2022 17:39
Last modified: 17 Mar 2024 03:15
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Author:
Andrea Vinante
Author:
Andrea Lapi
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