We calculate chromoelectric and chromomagnetic correlators in quenched QCD at $1.5{T}_{c}$ ${10}^{4}{T}_{c}$, with the aim to estimate heavy quark diffusion coefficient leading order inverse mass expansion, ${\ensuremath{\kappa}}_{\mathrm{E}}$, as well of first mass-suppressed correction, ${\ensuremath{\kappa}}_{\mathrm{B}}$. use gradient flow for noise reduction. At we obtain $1.70\ensuremath{...

This document provides definitions of terms and processes which are used in describing the migration of host and foreign species through solid materials. Both the phenomenological theory of diffusion and the detailed atomistic mechanisms by which atom transport occurs are treated. Also included are the various types of gradients such as electrical, chemical, thermal and mechanical, which provid...

Engineering uses the chloride ion diffusion coefficient as the durability of concrete quality control indicators under the marine environment, due to the chloride ion diffusion coefficient and the electrical resistivity of concrete parameters are reflected in the concrete pore structure, and resistivity testing is convenient, fast advantages, the resistivity alternative chloride ion diffusion c...

We consider diffusion on substrate with a frozen disorder. While in ordered state the moving particle meets always the same energy barrier in amorphous state there is a more or less broad distribution of the height of barriers. The effective activation energy Eeff that controls the diffusion process is not equal to the average activation energy barrier. Actually, Eeff is the highest barrier tha...