# GW convergence

From The Yambo Project

We converge the main parameters of a GW calculation independently. We make use of the plasmon pole approximation, we use the newton solver

The main variables are:

- FFTGvecs: Global cutoff
- BndsRnXp: Number of bands in the calculation of the dielectric function (PPA).
- NGsBlkXp: Cutoff of the dielectric function.
- GbndRnge: Self-energy. Number of bands.

The convergence with the k-grid is done after these variables are converged and in principle is also independent of them.