2000/12/25 by Mitsuhiro Kawasaki · 1 citation
Materials Science · Physics and Astronomy · #Material Dynamics and Properties #Spectroscopy and Quantum Chemical Studies #Theoretical and Computational Physics #cond-mat.dis-nn
paper · pdf · doi:10.1143/jpsj.70.1762
published as J. Phys. Soc. Jpn. 70, 1762-1767 (2001). · 11 pages, 4 figures, submitted to J.Phys. Soc. Jpn
arxiv created 2000/12/25 · openalex publication_date 2001/06/15 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Theoretical analyses of the random energy model with only two states and its extension with a hierarchy of only two levels show that these models reproduce out-of-equilibrium phenomena observed in experiments of glassy materials; the rejuvenation effect (the chaos effect), i.e. the abrupt jump and subsequent relaxation of the out-of-phase susceptibility as if the system rejuvenates when the temperature is lowered, and the power-law relaxation of the two-time correlation function. Our results suggest that also in an assembly of small systems with relaxation times distributed broadly some of these interesting out-of-equilibrium phenomena can be observed.