GW/BSE calculation of spin-polarized system?

Dear developers,

I have a few questions about the excited states calculation for spin-polarized systems.

(1) Can GW calculation be applied to spin-polarized systems?
(2) If the answer is YES for (1), is there any extra element/attribute to be added? I can not find any from input reference.
(3) How about the BSE of spin-polarized systems?

I am looking forward your kind answers,

Best Regards,

Zeyu Jiang, Postdoctoral Fellow
Department of Physics, Applied Physics, and Astronomy
Rensselaer Polytechnic Institute
110 8th Street, Troy, New York