E
Enrico Arrigoni
Researcher at Graz University of Technology
Publications - 175
Citations - 3119
Enrico Arrigoni is an academic researcher from Graz University of Technology. The author has contributed to research in topics: Hubbard model & Superconductivity. The author has an hindex of 32, co-authored 169 publications receiving 2813 citations. Previous affiliations of Enrico Arrigoni include University of California, Los Angeles & University of Würzburg.
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Journal ArticleDOI
Fate of the false Mott-Hubbard transition in two dimensions
Thomas Schäfer,Faruk Geles,Daniel Rost,G. Rohringer,Enrico Arrigoni,Karsten Held,N. Blümer,Markus Aichhorn,Alessandro Toschi +8 more
TL;DR: In this article, the impact of nonlocal electronic correlations at all length scales on the Mott-Hubbard metal-insulator transition in the unfrustrated two-dimensional Hubbard model was studied.
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Variational cluster approach to spontaneous symmetry breaking: The itinerant antiferromagnet in two dimensions
TL;DR: In this paper, an extension of the cluster-perturbation theory to systems with spontaneously broken symmetry is presented, where short-range correlations are accurately taken into account via exact diagonalization of finite clusters.
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Antiferromagnetic to superconducting phase transition in the hole- and electron-doped Hubbard model at zero temperature
TL;DR: In this article, a variational quantum-cluster theory was proposed to provide a thermodynamically consistent determination of the particle number, provided that an overall shift of the on-site energies is treated as a variable parameter and the consequences for the single-particle excitation spectra and the phase diagram were explored.
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Model for the magnetic order and pairing channels in Fe pnictide superconductors.
Maria Daghofer,Maria Daghofer,Adriana Moreo,Adriana Moreo,Jose Riera,Enrico Arrigoni,Douglas J. Scalapino,Elbio Dagotto,Elbio Dagotto +8 more
TL;DR: A two-orbital model for Fe-pnictide superconductors is investigated using computational techniques on two-dimensional square clusters, and two pairing operators were identified: they involve inter-xz-yz orbital combinations forming spin singlets or triplets, transforming according to the B2g and A2g representations of the D4h group.
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Nonequilibrium Dynamical Mean Field Theory: an auxiliary Quantum Master Equation approach.
TL;DR: A versatile method to compute electronic steady-state properties of strongly correlated extended quantum systems out of equilibrium based on dynamical mean-field theory based on an auxiliary nonequilibrium impurity problem imbedded in a Markovian environment is introduced.