Rigorous bounds prove that the number of complex exponentials needed for non-Markovian bath correlations is bounded independently of T for many spectral densities, with mild T-dependence only for strong singularities.
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Broad regions of horizontal and vertical spin stripes appear at low temperature in the Hubbard model, with wavelengths that vary nonlinearly with hole doping and are highly sensitive to the ratio of nearest- and next-nearest-neighbor hoppings.
Introductory chapter on nonequilibrium Green's functions in dynamical mean-field theory for correlated electrons.
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Provably Efficient Long-Time Exponential Decompositions of Non-Markovian Gaussian Baths
Rigorous bounds prove that the number of complex exponentials needed for non-Markovian bath correlations is bounded independently of T for many spectral densities, with mild T-dependence only for strong singularities.
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Spin-stripes in the Hubbard model: a combined DMFT and Bethe-Salpeter analysis
Broad regions of horizontal and vertical spin stripes appear at low temperature in the Hubbard model, with wavelengths that vary nonlinearly with hole doping and are highly sensitive to the ratio of nearest- and next-nearest-neighbor hoppings.
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An introduction to many-body Green's functions in and out of equilibrium
Introductory chapter on nonequilibrium Green's functions in dynamical mean-field theory for correlated electrons.