Dynamic effects of external axion fields in a system of many particles with spin

TL;DR

This paper develops a theoretical model describing how external axion fields influence spin systems, proposing a new approach for detecting axion-like dark matter through spin and current density measurements.

Contribution

It introduces a comprehensive dynamic formalism that incorporates axion effects into non-equilibrium spin system equations, enabling experimental dark matter detection strategies.

Findings

Derived a closed system of dynamic equations including axion effects

Proposed a method for detecting axion-like dark matter

Highlighted the influence of spin-rotation coupling

Abstract

We develop the theoretical model that describes dynamic non-equilibrium effects of external inertial and axion fields in a system of particles with spin. The possibility of using the spin density and the current density of non-relativistic quantum particle systems for the detection of the hypothetical axion-like dark matter is discussed. The resulting closed system of dynamic equations encompasses the continuity equation, the momentum balance equation, and the spin density evolution equation, accounting for the influence of the spin-rotation coupling and the external axion fields. The new formalism opens up new perspectives for an experimental search of dark matter axions.