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14 papers · 2 filters
Non-Drude universal scaling laws for the optical response of local Fermi liquids
Christophe Berthod, Jernej Mravlje, Xiaoyu Deng +3
We investigate the frequency and temperature dependence of the low-energy electron dynamics in a Landau Fermi liquid with a local self-energy. We show that the frequency and temper…
Non-perturbative stochastic method for driven spin-boson model
Peter P. Orth, Adilet Imambekov, Karyn Le Hur
We introduce and apply a numerically exact method for investigating the real-time dissipative dynamics of quantum impurities embedded in a macroscopic environment beyond the weak-c…
Electronic band structure of BaCoAs: a fully-doped ferropnictide with reduced electronic correlations
N. Xu, P. Richard, A. van Roekeghem +8
We report an angle-resolved photoemission spectroscopy investigation of the Fermi surface and electronic band structure of BaCoAs. Although its quasi-nesting-free Fermi s…
Screening and Non-local Correlations in the Extended Hubbard Model from Self-Consistent Combined GW and Dynamical Mean Field Theory
Thomas Ayral, Silke Biermann, Philipp Werner
We describe a recent implementation of the combined GW and dynamical mean field (DMFT) method "GW+DMFT" for the two-dimensional Hubbard model with on-site and nearest-neighbor repu…
Scaling of entanglement entropy across Lifshitz transitions
Marlon Rodney, H. Francis Song, Sung-Sik Lee +2
We investigate the scaling of the bipartite entanglement entropy across Lifshitz quantum phase transitions, where the topology of the Fermi surface changes without any changes in s…
Combined GW and dynamical mean field theory: Dynamical screening effects in transition metal oxides
Jan M. Tomczak, Michele Casula, Takashi Miyake +2
We present the first dynamical implementation of the combined GW and dynamical mean field scheme ("GW+DMFT") for first principles calculations of the electronic properties of corre…