Thermal Conductivity of the Classical Electron One-Component Plasma

We carried out molecular dynamics experiments to determine the reduced heat diffusion coefficient $D_{\mathrm{th}}^{*}$ and the reduced thermal conductivity ${\lambda }^{*}$ of the three-dimensional classical electron one-component plasma, for the $1\le \Gamma \le 20$ range of the plasma coupling parameter $\Gamma$. In our simulations the temperature of the system was spatially modulated, and $D_{\mathrm{th}}^{*}$ and ${\lambda }^{*}$ were calculated from the relaxation time of the temperature profile. $D_{\mathrm{th}}^{*}$ was found to decrease with increasing $\Gamma$, while ${\lambda }^{*}$ decreased with increasing $\Gamma$ for $\Gamma \le 4$ (from ${\lambda }^{*}\cong 2.3$ at $\Gamma =1.1\mathrm{}$ to ${\lambda }^{*}\cong 0.6$ at $\Gamma =4\mathrm{}$) and was approximately constant ( ${\lambda }^{*}\cong 0.4$) in the $8\le \Gamma \le 20$ range.