# Recent breakthrough and outlook in constraining the non-Newtonian gravity and axion-like particles from Casimir physics

## TL;DR

This paper reviews recent experimental constraints on non-Newtonian gravity and axion-like particles derived from Casimir physics experiments, highlighting improvements and proposing modifications to enhance sensitivity.

## Contribution

It provides the strongest current constraints on Yukawa-type gravity corrections and axion-like particle couplings from Casimir force measurements, and suggests experimental modifications for stronger bounds.

## Key findings

- Constraints on Yukawa-type corrections are refined.
- Constraints on axion-like particles are tightened.
- Proposed experimental modifications could improve constraints by an order of magnitude.

## Abstract

The strongest constraints on the Yukawa-type corrections to Newton's gravitational law and on the coupling constants of axion-like particles to nucleons, following from recently performed experiments of the Casimir physics, are presented. Specifically, the constraints obtained from measurements of the lateral and normal Casimir forces between sinusoidally corrugated surfaces, and from the isoelectronic experiment are considered, and the ranges of their greatest strength are refined. Minor modifications in the experimental setups are proposed which allow strengthening the resultant constraints up to an order of magnitude. The comparison with some weaker constraints derived in the Casimir regime is also made.