Derivation of a stability condition reveals that misleading convergence in self-consistent many-electron theories can occur independently of irreducible vertex divergences, with a stabilization procedure proposed.
Potthoff, Self-energy-functional approach to systems of correlated electrons, The European Physical Journal B - Condensed Matter 32, 429 (2003)
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Origin of misleading convergence in self-consistent many-electron theories: Fundamental aspects and practical implications
Derivation of a stability condition reveals that misleading convergence in self-consistent many-electron theories can occur independently of irreducible vertex divergences, with a stabilization procedure proposed.