2021/11/06 by Hongyi Xiao, Andrea J. Liu, Xiao, Hongyi +4
Engineering · Materials Science · Physics and Astronomy · #Advanced Thermodynamics and Statistical Mechanics #FOS: Physical sciences #Granular flow and fluidized beds #Material Dynamics and Properties #Soft Condensed Matter (cond-mat.soft) #Sports Dynamics and Biomechanics #cond-mat.soft
paper · pdf · doi:10.48550/arxiv.2111.03921
5 pages, 4 figures
arxiv created 2021/11/06 · openalex publication_date 2021/11/06 · arxiv updated 2021/11/09 · openalex created_date 2022/05/05 · openalex updated_date 2026/07/28
To experimentally search for signals of the Gardner transition, an active quasi-thermal granular glass is constructed using a monolayer of air-fluidized star-shaped granular particles. The pressure of the system is controlled by adjusting the tension exerted on an enclosing boundary. Velocity distributions of the internal particles and the scaling of the pressure, density, effective-temperature, and relaxation time are examined, demonstrating that the system has important features of a thermal system. Using a pressure-based quenching protocol that brings the system into deeper glassy states, signals of the Gardner transition are detected via cage size and separation order parameters for both particle positions and orientations, offering experimental evidence of the Gardner transition for a system with in low spatial dimensions that is quasi-thermal.