336 citations · 2.1k across the 77 of their papers we have counts for
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Systematics of approximations constructed from dynamical variational principles
Michael Potthoff
The systematics of different approximations within the self-energy-functional theory (SFT) is discussed for fermionic lattice models with local interactions. In the context of the…
Antiferromagnetic to superconducting phase transition in the hole- and electron-doped Hubbard model at zero temperature
M. Aichhorn, E. Arrigoni, M. Potthoff +1
The competition between d-wave superconductivity (SC) and antiferromagnetism (AF) in the high-Tc cuprates is investigated by studying the hole- and electron-doped two-dimensional H…
Correlated band structure and the ground-state phase diagram in high-Tc cuprates
Werner Hanke, Markus Aichhorn, Enrico Arrigoni +1
We review results obtained with a recently proposed variational cluster approach (VCA) for the competition between d-wave superconductivity (dSC) and antiferromagnetism (AF) in the…
Correlated band structure of electron-doped cuprate materials
C. Dahnken, M. Potthoff, E. Arrigoni +1
We present a numerical study of the doping dependence of the spectral function of the n-type cuprates. Using a variational cluster-perturbation theory approach based upon the self-…
Dynamical variational principles for strongly correlated electron systems
Michael Potthoff
The self-energy-functional approach (SFA) is discussed in the context of different variational principles for strongly correlated electron systems. Formal analogies between static…