Observation of a magnetic shift in neutron whispering-gallery states

Abstract

We developed experimental and theoretical methods to create and describe high-resolution whispering-gallery interference patterns and show the feasibility of measuring their small shifts by external interactions. Such experiments can be used to search for extra fundamental interactions, time parity violations, nonzero electric charges, precisely measuring the gravitational properties of (anti)matter, parity violations, neutron polarizability, quantum reflection, surface state effects, etc. Here, we measure a magnetic shift of such a neutron pattern δg/g∼ (6.5 ± 0.8_st ± 1.2_sys) · 10⁻⁴, and our sensitivity to spin-dependent differences between the scattering lengths was δb_n/b_n ∼ 10⁻⁴.

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BibTeX RIS

BibTeX

@misc{schreiner2026observation,
  title = {{Observation of a magnetic shift in neutron whispering-gallery states}},
  author = {K Schreiner and J.A Pioquinto and S Baeßler and V.V Nesvizhevsky and P Clade and P Crivelli and R Cubitt and J Guyomard and C Killian and U Miniotaite and F Nez and E Perry and S Reynaud and T Saerbeck and L Shen and K Stinson and J Vivier and A Vorobiev and J Walsh and E Widmann and P Yzombard and A Zhao},
  howpublished = {HAL},
  year = {2026},
  month = sep,
  doi = {10.48550/arxiv.2609.25982},
  eprint = {2609.25982},
  archivePrefix = {arXiv},
  url = {https://hal.science/hal-05781727v1},
}

RIS

TY  - UNPB
TI  - Observation of a magnetic shift in neutron whispering-gallery states
AU  - K Schreiner
AU  - J.A Pioquinto
AU  - S Baeßler
AU  - V.V Nesvizhevsky
AU  - P Clade
AU  - P Crivelli
AU  - R Cubitt
AU  - J Guyomard
AU  - C Killian
AU  - U Miniotaite
AU  - F Nez
AU  - E Perry
AU  - S Reynaud
AU  - T Saerbeck
AU  - L Shen
AU  - K Stinson
AU  - J Vivier
AU  - A Vorobiev
AU  - J Walsh
AU  - E Widmann
AU  - P Yzombard
AU  - A Zhao
PY  - 2026
DA  - 2026/09/22
PB  - HAL
DO  - 10.48550/arxiv.2609.25982
UR  - https://hal.science/hal-05781727v1
AB  - We developed experimental and theoretical methods to create and describe high-resolution whispering-gallery interference patterns and show the feasibility of measuring their small shifts by external interactions. Such experiments can be used to search for extra fundamental interactions, time parity violations, nonzero electric charges, precisely measuring the gravitational properties of (anti)matter, parity violations, neutron polarizability, quantum reflection, surface state effects, etc. Here, we measure a magnetic shift of such a neutron pattern δg/g∼ (6.5 ± 0.8_st ± 1.2_sys) · 10^−4, and our sensitivity to spin-dependent differences between the scattering lengths was δb_n/b_n ∼ 10^−4.
ER  -

Abstract

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