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Showing 2017 · cond-mat.str-elShow all
3 papers · 2 filters
cond-mat.str-el2017★ 55 cited
Computation of ground-state properties in molecular systems: back-propagation with auxiliary-field quantum Monte Carlo
Mario Motta, Shiwei Zhang
We address the computation of ground-state properties of chemical systems and realistic materials within the auxiliary-field quantum Monte Carlo method. The phase constraint to con…
cond-mat.str-el2017★ 19 cited
Collective charge excitations and the metal-insulator transition in the square lattice Hubbard-Coulomb model
Maksim Ulybyshev, Christopher Winterowd, Savvas Zafeiropoulos
In this article, we discuss the non-trivial collective charge excitations (plasmons) of the extended square-lattice Hubbard model. Using a fully non-perturbative approach, we emplo…
cond-mat.str-el2017★ 10 cited
Numerical results on the short-range spin correlation functions in the ground state of the two-dimensional Hubbard model
Mingpu Qin, Hao Shi, Shiwei Zhang
Optical lattice experiments with ultracold fermion atoms and quantum gas microscopy have recently realized direct measurements of magnetic correlations at the site-resolved level.…