Potential of the neutron Lloyd’s mirror interferometer for the search for new interactions

Pokotilovski, Yu. N.

doi:10.1134/s1063776113030138

Cited by 7 publications

(2 citation statements)

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“…The eigenstate energies would be shifted in the presence of an exotic Yukawa interactions sourced by the mirror material [86]. One can also consider employing a Lloyd's mirror interferometer for neutrons [87][88][89] as the interference between the forward-propagating amplitude and that reflected from the mirror in this type of interferom-eter can be sensitive to the exotic Yukawa phase shift from the mirror surface.…”

Section: Possibilities For Future Improvementsmentioning

confidence: 99%

Internal consistency of neutron coherent scattering length measurements from neutron interferometry and from neutron gravity reflectometry

et al. 2020

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Many theories beyond the Standard Model postulate short-range modifications to gravity which produce deviations of Newton's gravitational potential from a strict 1/r dependence. It is common to analyze experiments searching for these modifications using a potential of the formThe best present constraints on α for λ < 100 nm come from neutron scattering and often employ comparisons of different measurements of the coherent neutron scattering amplitudes b. We analyze the internal consistency of existing data from two different types of measurements of low energy neutron scattering amplitudes: neutron interferometry, which involves momentum transfers q 2 = 0, and neutron gravity reflectometry, which involves momentum transfers q 2 = 8mVopt where m is the neutron mass and Vopt is the neutron optical potential of the medium. We show that the fractional difference ∆b |b| averaged over the 7 elements where high precision data exists on the same material from both measurement methods is [2.2 ± 1.4] × 10 −4 . We also show that ∆b |b| for this data is insensitive both to exotic Yukawa interactions and also to the electromagnetic neutron-atom interactions proportional to the neutron-electron scattering length bne and the neutron polarizability scattering amplitude b pol . This result will be useful in any future global analyses of neutron scattering data to determine bne and bound α and λ. We also discuss how various neutron interferometric and scattering techniques with cold and ultracold neutrons can be used to improve the precision of b measurements and make some specific proposals.

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Section: Possibilities For Future Improvementsmentioning

confidence: 99%

Internal consistency of neutron coherent scattering length measurements from neutron interferometry and from neutron gravity reflectometry

et al. 2020

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“…In recent years these models have been (proposed to be) tested in various experiments, see, e.g., Refs. [8,[28][29][30][31][32][33][34][35][36][37][38][39][40][41][42][43][44], studied as quantum fields [45][46][47][48], and proposed for investigations in analog gravity simulations [49].…”

Section: Introductionmentioning

confidence: 99%

Lensing with Generalized Symmetrons

Käding

2023

Astronomy

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Generalized symmetrons are models that have qualitatively similar features to the archetypal symmetron, but have barely been studied. In this article, we investigate for what parameter values the fifth forces induced by disformally coupling generalized symmetrons can provide an explanation for the difference between baryonic and lens masses of galaxies. While it is known that the standard symmetron struggles to provide an alternative source for the lensing otherwise attributed to particle dark matter, we show that some generalized symmetron models are more suitable for complying with existing constraints on disformal couplings. This motivates future studies of these only little-explored models.

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