In order to compute frequency dependent dielectric constant using RPA ( with local fields ) in VASP how to set the NBANDS?

03 June 2024 0 7K Report

I am following these steps to calculate the dielectric constant of a zeolite.

https://www.vasp.at/wiki/index.php/Dielectric_properties_of_SiC

However, In step 2 IPA (independent particle approximation) I double the NBANDS taken from the OUTCAR from the ground state calculation in step1. I get warning like For correlated |

| calculations, however, you should redo the groundstate calculation. |

| I found NBANDS = 306. Now, NBANDS = 1024.

Also, I am not able to converge the RPA calculation as it requires a lot of memory. Can anyone please suggest me any alternatives I can add in the INCAR to be able to get the dielectric constant? I have attached the INCAR below.

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