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Quantum Monte Carlo facing the Hartree-Fock symmetry dilemma: The case of hydrogen rings
Quantum Monte Carlo Hartree-Fock hydrogen rings
2011/8/5
Abstract: When using Hartree-Fock (HF) trial wave functions in quantum Monte Carlo calculations, one faces, in case of HF instabilities, the HF symmetry dilemma in choosing between the symmetry-adapte...
Correlation Effects in Quantum Spin Hall Insulators: a Quantum Monte Carlo Study
Correlation Effects Quantum Spin Hall Insulators Quantum Monte Carlo Study
2010/11/25
We consider the Kane-Mele model with spin-orbit coupling supplemented by a Hubbard U term.
On the basis of projective auxiliary eld quantum Monte Carlo simulations on lattice sizes up to 12 12, ...