Symmetry and Memory in Driven Disordered Systems

2025/10/13 by Padamata, Surendra, Keim, Nathan C.
#Disordered Systems and Neural Networks (cond-mat.dis-nn) #FOS: Physical sciences #Soft Condensed Matter (cond-mat.soft) #Statistical Mechanics (cond-mat.stat-mech)

paper · doi:10.48550/arxiv.2510.11825

Abstract

Steadily shearing a non-Brownian suspension forms a memory of direction in its structure, while periodically shearing it forms a memory of amplitude. Our experiments show that these memories coexist and compete within a limited memory capacity. A specific oscillatory amplitude, previously associated with a critical transition, suppresses the directional (fore-aft) asymmetry. A similar picture is known in amorphous solids. We propose that these competing kinds of memory are a motif for non-equilibrium systems coupled to a scalar drive and are a basic example of interplay between memories.

Citations

• Tuning residual stress, directional memory and aging in soft glassy materials

Related

• Memory formation in dense persistent active matter
• Self-organization, Memory and Learning: From Driven Disordered Systems to Living Matter
• The Memory Engine: Self-Organized Coherence from Internal Feedback
• Self-organization and memory in an disordered solid subject to random loading
• Yielding and memory in a driven mean-field model of glasses