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# LSELFENERGY

LSELFENERGY = [logical]
Default: LSELFENERGY = .FALSE.

Description: This tag controls whether the frequency dependent self-energy is calculated or not.

If LSELFENERGY=.FALSE., QP shifts are evaluated. This is the default behavior.

If LSELFENERGY=.TRUE., the frequency dependent self-energy ${\displaystyle \langle \psi _{{n{{\mathbf {k}}}}}|\Sigma (\omega )|\psi _{{n{{\mathbf {k}}}}}\rangle }$ is evaluated. Evaluation of QP shifts is bypassed in this case.