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cond-mat.str-el2021
Nonlocality, entropy creation, and entanglement in quantum many-body systems
Marc Dvorak
We propose a reinterpretation and reformulation of the single-particle Green's function in nonrelativistic quantum many-body theory with an emphasis on normalization. By downfoldin…
cond-mat.str-el2021
Particle conservation in the single-particle Green's function
Marc Dvorak
We argue that the exact single-particle Green's function () in quantum many-body theory does not conserve particle number because the single-particle basis is incomplete. We con…