Year: 2026
Type: preprint
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 $δg/g\sim (6.5 \pm 0.8_{st} \pm 1.2_{sys}) \cdot 10^{-4}$, and our sensitivity to spin-dependent differences between the scattering lengths was $δb_n/b_n \sim 10^{-4}$.
Source: arXiv (Cornell University)
Institutions: Institut Laue-Langevin, University of Virginia, Oak Ridge National Laboratory, Centre National de la Recherche Scientifique, Laboratoire Kastler Brossel, Sorbonne Université, ETH Zurich, Institute for Particle Physics and Astrophysics, Austrian Academy of Sciences, MBI - Marietta-Blau-Institut für Teilchenphysik, Uppsala University
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W7214071663
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