I'm studying plasmons from "Haken-Quantum Field Theory of Solids", and i need some help in the calculation of the equation of motion of eletrons' density
\begin{equation}
\hat{\rho}_{\overrightarrow{q}} = \frac{1}{\sqrt{V}} \sum_{\overrightarrow{k}}...
Hi,
I'm Giovanni, a physics student at Salerno's University. I'm specializing in Solid-State Physics, so I've a lot of question about this branch of physics.
I hope to contribute to the resolution of some question.