Hi,

I'm using Yambo-4.3.3 to run real-time calculations. The test on silicon was passed.

However, for my own system, the results for real-time BSE are weird.

1) The external electrical field is set in the direction of [1 1 1]. The real-time IPA calculations have non-zero initial polarizations for three directions. After post-processing, the dielectric functions are nicely agreement with those of frequency-domain IPA calculations.

2) However, for real-time BSE calculations, the initial polarization along the direction X is zero. And subsequent polarizations are always zero along direction X but not zero in the directions of y and z.

Some necessary files were attached, expect any suggestions!

Thanks a lot!

Best,

Xiaowei