# Dark Matter Induced Brownian Motion

## TL;DR

This paper proposes a novel method to detect light dark matter by observing induced Brownian motion in sensitive position measurements, potentially revealing dark matter properties and distribution.

## Contribution

It introduces a new experimental approach inspired by gravitational wave detectors to search for dark matter through motion analysis.

## Key findings

- Estimates sensitivity for detecting dark matter-induced motion
- Potential to constrain local dark matter momentum distribution
- Proposes a feasible experimental setup for dark matter detection

## Abstract

We discuss a novel approach for directional, light dark matter searches inspired by the high precision position measurements achieved in gravitational wave detectors. If dark matter interacts with ordinary matter, movable masses are subject to an effect similar to Brownian motion induced by the scattering with dark matter particles which exhibits certain characteristics and could be observed. We provide estimates for the sensitivity of a hypothetical experiment looking for that motion. Interestingly, if successful, our approach would allow to constrain the local distribution of dark matter momentum.