Goldstone fluctuations in the amorphous solid state
软凝聚态物质
2009-11-10 v1 无序系统与神经网络
统计力学
摘要
Goldstone modes in the amorphous solid state, resulting from the spontaneous breaking of translational symmetry due to random localisation of particles, are discussed. Starting from a microscopic model with quenched disorder, the broken symmetry is identified to be that of relative translations of the replicas. Goldstone excitations, corresponding to pure shear deformations, are constructed from long wavelength distortions of the order parameter. The elastic free energy is computed, and it is shown that Goldstone fluctuations destroy localisation in two spatial dimensions, yielding a two-dimensional amorphous solid state characterised by power-law correlations.
引用
@article{arxiv.cond-mat/0310664,
title = {Goldstone fluctuations in the amorphous solid state},
author = {Swagatam Mukhopadhyay and Paul M. Goldbart and Annette Zippelius},
journal= {arXiv preprint arXiv:cond-mat/0310664},
year = {2009}
}
备注
7 pages, 2 figures