Critical exponents of directed percolation measured in spatiotemporal intermittency

TL;DR

This paper presents an experimental system of ferrofluidic spikes demonstrating a transition to spatiotemporal intermittency, with measured critical exponents largely aligning with directed percolation theory.

Contribution

It introduces a novel experimental setup for studying spatiotemporal intermittency and provides empirical measurements of critical exponents consistent with theoretical models.

Findings

Critical exponents measured in the experiment largely agree with directed percolation predictions.

The system exhibits a clear transition to spatiotemporal intermittency.

Experimental results support the universality of directed percolation in such systems.

Abstract

A new experimental system showing a transition to spatiotemporal intermittency is presented. It consists of a ring of hundred oscillating ferrofluidic spikes. Four of five of the measured critical exponents of the system agree with those obtained from a theoretical model of directed percolation.