Terms of versatility and performance Gull et al. Monte Carlo (ctQMC) methods appear to be the current favorites in For multi-band models, continuous-time Quantum Has been invested over the years to develop ever more powerful On that of the method used to solve this impurity model, much effort “bath”) as a quantum impurity model with a self-consistentlyĭetermined hybridization function. Given lattice site (the “impurity”) and the rest of the lattice (the Strongly-correlated electron systems and electronic structureĬalculations is dynamical mean field theory (DMFT) Renormalization group flows clearly reveal the relevant physics atĪ widely-used method for dealing with interactions in Screening occurs at much lower energies than orbital screening. Orbital spectral functions show “spin-orbital separation”: spin Power-law behavior for positive frequencies only.
Incoherent regime the one-particle self-energy shows approximate Spectral function has a strong particle-hole asymmetry, and in the With spectral weight being transfered from low to high energies, andĮvolves qualitatively differently from a doped Mott insulator. Shows a coherence-incoherence crossover with increasing temperature, Problem for a three-orbital model with filling factor n d = 2. To obtain a numerically exact DMFT solution to the Hund’s metal Resolution at arbitrarily low energies and temperatures. Theory (DMFT), offering unprecedent real-frequency spectral Is a viable multi-band impurity solver for Dynamical Mean Field We show that the numerical renormalization group (NRG)
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