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Momentum distribution and Compton profile by the<i>ab initio</i>GW approximation

Momentum distribution and Compton profile by the<i>ab initio</i>GW approximation

We present two possible approaches to calculate the momentum distribution $n(p)$ and the Compton profile within the framework of the ab initio GW approximation on the self-energy. The approaches are based on integration of the Green's function along either the real or the imaginary axes. Examples will be presented on …