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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...
Monte-Carlo-based spectral gain analysis for THz quantum cascade lasers
THz quantum cascade lasers Monte-Carlo-based spectral gain analysis
2011/9/14
Employing an ensemble Monte Carlo transport simulation, we self-consistently analyze the spectral gain for different THz quantum cascade laser structures, considering bound-to-continuum as well as res...
Monte Carlo study of carrier-light coupling in terahertz quantum cascade lasers
Monte Carlo carrier-light coupling terahertz quantum cascade lasers
2011/9/14
We present a method for self-consistently including the optical cavity field into Monte Carlo-based carrier transport simulations. This approach allows for an analysis of the actual lasing operation i...
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, ...