Bethe-Salpeter diagonalization

'Prerequisites

Run Initialization

Run Static screening

Run GW in PPA

Run Bethe-Salpeter Kernel

Create the input

for h-BN bulk

$ yambo -F 03_bse_Ws_yd.in -b -o b -k sex -V qp -y d

or for h-BN 2D

$ yambo -F 03_bse_Ws_2D_yd.in -b -o b -k sex -V qp -r  -y d 

Open the input and uncomment the variable

1. Wf..

This will allow to write the exctionic eigenvector and eigenvalues to be use in post-processing runs

Close in input and run the code

$ yambo -F 03_bse_Ws_yd.in  -J 3D  ( for 3D)

or

$ yambo -F 03_bse_Ws_2D_yd.in -J 2D  (for 2D)