I have performed a BSE calculation on top of a G0W0 calculation for the 2D hBN system using Yambo-5.1.0. However, I found that the imaginary part of the dielectric function is exactly zero when using the SLEPC solver.
Code: Select all
# E/ev[1] EPS-Im[2] EPS-Re[3] EPS_o-Im[4] EPS_o-Re[5]
#
0.00000000 0.00000000 1.00000000 0.00000000 1.00000000
0.199999986E-2 0.00000000 1.00000000 0.00000000 1.00000000
0.399999972E-2 0.00000000 1.00000000 0.00000000 1.00000000
0.599999959E-2 0.00000000 1.00000000 0.00000000 1.00000000
0.799999945E-2 0.00000000 1.00000000 0.00000000 1.00000000
0.999999885E-2 0.00000000 1.00000000 0.00000000 1.00000000
0.119999992E-1 0.00000000 1.00000000 0.00000000 1.00000000
0.139999995E-1 0.00000000 1.00000000 0.00000000 1.00000000
0.159999989E-1 0.00000000 1.00000000 0.00000000 1.00000000
0.179999992E-1 0.00000000 1.00000000 0.00000000 1.00000000
0.199999977E-1 0.00000000 1.00000000 0.00000000 1.00000000
0.219999980E-1 0.00000000 1.00000000 0.00000000 1.00000000
0.239999983E-1 0.00000000 1.00000000 0.00000000 1.00000000
0.259999987E-1 0.00000000 1.00000000 0.00000000 1.00000000
0.279999990E-1 0.00000000 1.00000000 0.00000000 1.00000000
0.299999975E-1 0.00000000 1.00000000 0.00000000 1.00000000
0.319999978E-1 0.00000000 1.00000000 0.00000000 1.00000000
0.339999981E-1 0.00000000 1.00000000 0.00000000 1.00000000
0.359999985E-1 0.00000000 1.00000000 0.00000000 1.00000000
0.379999988E-1 0.00000000 1.00000000 0.00000000 1.00000000
0.399999954E-1 0.00000000 1.00000000 0.00000000 1.00000000
0.419999994E-1 0.00000000 1.00000000 0.00000000 1.00000000
0.439999960E-1 0.00000000 1.00000000 0.00000000 1.00000000
0.459999964E-1 0.00000000 1.00000000 0.00000000 1.00000000
0.479999967E-1 0.00000000 1.00000000 0.00000000 1.00000000
0.499999970E-1 0.00000000 1.00000000 0.00000000 1.00000000
0.519999973E-1 0.00000000 1.00000000 0.00000000 1.00000000
0.539999977E-1 0.00000000 1.00000000 0.00000000 1.00000000
0.559999980E-1 0.00000000 1.00000000 0.00000000 1.00000000
0.579999946E-1 0.00000000 1.00000000 0.00000000 1.00000000
Does anyone know what's wrong with this BSE calculation? Thank you very much!
Best wishes,
Longlong Li