4 papers
Quantum Monte Carlo facing the Hartree-Fock symmetry dilemma: The case of hydrogen rings
Peter Reinhardt, Julien Toulouse, Roland Assaraf +2
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 symme…
Quantum Monte Carlo calculations of electronic excitation energies: the case of the singlet (CO) transition in acrolein
Julien Toulouse, Michel Caffarel, Peter Reinhardt +2
We report state-of-the-art quantum Monte Carlo calculations of the singlet (CO) vertical excitation energy in the acrolein molecule, extending the recent study of Bouab…
A Vision-based Computed Torque Control for Parallel Kinematic Machines
Flavien Paccot, Philippe Lemoine, Nicolas Andreff +2
In this paper, a novel approach for parallel kinematic machine control relying on a fast exteroceptive measure is implemented and validated on the Orthoglide robot. This approach b…
Comment on "Large negative lateral shifts from the Kretschmann-Raether configuration with left-handed materials" Appl. Phys. Lett. 87, 221102, 2005
Antoine Moreau, Didier Felbacq
The negative shifts seen by Wang and Zhu are not due to the excitation of surface plasmons but to leaky modes of the slab propagating backward. Provided the characteristics of the…