Berthier Ludovic
Theoretical Physics, 1 Keble Road, Oxford, OX1 3NP, United Kingdom.
Phys Rev Lett. 2003 Aug 1;91(5):055701. doi: 10.1103/PhysRevLett.91.055701.
We show that finite-size scaling techniques can be employed to study the glass transition. Our results follow from the postulate of a diverging dynamical correlation length at the glass transition whose physical manifestation is the presence of dynamical heterogeneities. We introduce a parameter B(T,L) whose temperature, T, and system size, L, dependences permit a precise location of the glass transition. We discuss the finite-size scaling behavior of a diverging susceptibility chi(L,T). These new techniques are successfully used to study two lattice models. The analysis straightforwardly applies to any glass-forming system.
我们表明,有限尺寸标度技术可用于研究玻璃化转变。我们的结果源于玻璃化转变时动态关联长度发散的假设,其物理表现是动态不均匀性的存在。我们引入一个参数B(T,L),其对温度T和系统尺寸L的依赖关系允许精确确定玻璃化转变的位置。我们讨论了发散磁化率χ(L,T)的有限尺寸标度行为。这些新技术已成功用于研究两个晶格模型。该分析可直接应用于任何玻璃形成系统。