Hi all, In the post-processing code, the "compute_sigma_avg" subroutine in the "compute_sigma_avg.f90" file calculates the average spin component values and stores them in sigma_avg(1:3, :). However, can anyone explain what the 4th component, sigma_avg(4, :), is? >From looking at the code, it seems that this involves the L_z operator. Does anyone have an explanation and possibly a reference?
Best regards, Lun Yue Department of Physics and Astronomy Louisiana State University
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