arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1104.3420cond-mat.stat-mechcond-mat.dis-nn
收藏

玻璃的动力学转变:从精确到近似

Dynamical transition of glasses: from exact to approximate

Romain Mari, Jorge Kurchan

摘要:

我们介绍了一个家庭的玻璃模型有一个参数,发挥作用的相互作用范围,可以不断变化,从一个质点系在d维的平均场版本。平均场的限制是准确描述的方程概念上接近,但不同的模式耦合方程。我们得到这些动态维里建设。令人惊讶的是,我们观察到,在三维空间中,平均场的行为是密切遵循的范围小到一个粒子间的距离,仍然定性为更小的距离。对于原来的粒子模型,我们期望目前的平均场论成为,不像模耦合方程,越来越好的近似在更高的维度。

英文摘要:

We introduce a family of glassy models having a parameter, playing the role of an interaction range, that may be varied continuously to go from a system of particles in d dimensions to a mean-field version of it. The mean-field limit is exactly described by equations conceptually close, but different from, the Mode-Coupling equations. We obtain these by a dynamic virial construction. Quite surprisingly we observe that in three dimensions, the mean-field behavior is closely followed for ranges as small as one interparticle distance, and still qualitatively for smaller distances. For the original particle model, we expect the present mean-field theory to become, unlike the Mode-Coupling equations, an increasingly good approximation at higher dimensions.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑