Density functionals and model Hamiltonians: Pillars of many-particle physics
K Capelle, VL Campo Jr - Physics Reports, 2013 - Elsevier
Density-functional theory (DFT) and model Hamiltonians are conceptually distinct
approaches to the many-particle problem, which can be developed and applied …
approaches to the many-particle problem, which can be developed and applied …
Spin-and density-resolved microscopy of antiferromagnetic correlations in Fermi-Hubbard chains
The repulsive Hubbard Hamiltonian is one of the foundational models describing strongly
correlated electrons and is believed to capture essential aspects of high-temperature …
correlated electrons and is believed to capture essential aspects of high-temperature …
A cold-atom Fermi–Hubbard antiferromagnet
Exotic phenomena in systems with strongly correlated electrons emerge from the interplay
between spin and motional degrees of freedom. For example, doping an antiferromagnet is …
between spin and motional degrees of freedom. For example, doping an antiferromagnet is …
String patterns in the doped Hubbard model
Understanding strongly correlated quantum many-body states is one of the most difficult
challenges in modern physics. For example, there remain fundamental open questions on …
challenges in modern physics. For example, there remain fundamental open questions on …
Short-range quantum magnetism of ultracold fermions in an optical lattice
Quantum magnetism originates from the exchange coupling between quantum mechanical
spins. Here, we report on the observation of nearest-neighbor magnetic correlations …
spins. Here, we report on the observation of nearest-neighbor magnetic correlations …
Formation and dynamics of antiferromagnetic correlations in tunable optical lattices
We report on the observation of antiferromagnetic correlations of ultracold fermions in a
variety of optical lattice geometries that are well described by the Hubbard model, including …
variety of optical lattice geometries that are well described by the Hubbard model, including …
Spin and charge correlations across the metal-to-insulator crossover in the half-filled 2D Hubbard model
The 2D Hubbard model with nearest-neighbor hopping on the square lattice and an average
of one electron per site is known to undergo an extended crossover from metallic to …
of one electron per site is known to undergo an extended crossover from metallic to …
Néel temperature and thermodynamics of the half-filled three-dimensional Hubbard model by diagrammatic determinant Monte Carlo
We study the thermodynamics of the three-dimensional Hubbard model at half filling on
approach to the Néel transition by means of large-scale unbiased diagrammatic determinant …
approach to the Néel transition by means of large-scale unbiased diagrammatic determinant …
Lefschetz thimble Monte Carlo for many-body theories: A Hubbard model study
A Mukherjee, M Cristoforetti - Physical Review B, 2014 - APS
Recently, a method based on stochastic integration on the surfaces of steepest descent of
the action was introduced to tackle the sign problem in quantum-field theories. We show …
the action was introduced to tackle the sign problem in quantum-field theories. We show …
Adiabatic Loading of One-Dimensional Alkaline-Earth-Atom Fermions <?format ?>in Optical Lattices
Ultracold fermionic alkaline earth atoms confined in optical lattices realize Hubbard models
with internal SU (N) symmetries, where N can be as large as ten. Such systems are …
with internal SU (N) symmetries, where N can be as large as ten. Such systems are …