Speaker: Dr. Liang Luo (罗亮 博士), Beijing Computational Science Research Center

Abstract: In this talk, I will discuss the anomalous diffusion in a random medium, which is important to understand the phenomena in glass, diffusion of defects, disordered surface, porous media, etc. It’s even more interesting that the model could be employed to explain macro-molecules’ sub-diffusive behavior observed in recent single molecular imagining experiments.
I will first give a short introduction to the basic ideas of random walk. Then, we will see how the sub-diffusive behavior arises in a case where the central limit theorem is not applicable. The concept of “self-averaging” is hence quite important to properly choose a statistical quantity to characterize a random process. At the end of the talk, I will give an introduction to the concepts of the “quenched” and “annealed” disorders and discuss the connection and differences between them.

Date&Time: May 30, 2014 (Friday), 14:30–15:30
Location: 606 Conference Room