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- Th. Bastin, S. Krins, Pierre Mathonet, Michel R. Godefroid, Lucas Lamata, E. Solano
- Physical review letters
- 2009

We solve the entanglement classification under stochastic local operations and classical communication (SLOCC) for all multipartite symmetric states in the general N-qubit case. For this purpose, weâ€¦ (More)

- Charlotte Froese Fischer, Georgio Tachiev, Gediminas Gaigalas, Michel R. Godefroid
- Computer Physics Communications
- 2007

An MCHF atomic-structure package is presented based on dynamic memory allocation, sparse matrix methods, and a recently developed angular library. It is meant for large-scale calculations in a basisâ€¦ (More)

P. Mathonet, S. Krins, M. Godefroid, L. Lamata, E. Solano, 6 and T. Bastin Institut de MathÃ©matique, UniversitÃ© de LiÃ¨ge, 4000 LiÃ¨ge, Belgium Institut de Physique NuclÃ©aire, Atomique et deâ€¦ (More)

A partitioned correlation function interaction approach for describing electron correlation in atoms

- S Verdebout, P Rynkun, Per JÃ¶nsson, Gediminas Gaigalas, Charlotte Froese Fischer, Michel R. Godefroid
- 2013

The traditional multiconfiguration Hartreeâ€“Fock (MCHF) and configuration interaction (CI) methods are based on a single orthonormal orbital basis. For atoms with many closed core shells, orâ€¦ (More)

- C. NazÃ©, E. Gaidamauskas, Gediminas Gaigalas, Michel R. Godefroid, Per JÃ¶nsson
- Computer Physics Communications
- 2013

An atomic spectral line is characteristic of the element producing the spectrum. The line also depends on the isotope. The program ris3 (Relativistic Isotope Shift) calculates the electron density atâ€¦ (More)

Uncertainties of calculated transition rates in LS-allowed electric dipole transitions in boron-like O IV and carbon-like Fe XXI are estimated using an approach in which differences in line strengthsâ€¦ (More)

- S. Verdebout, Per JÃ¶nsson, Gediminas Gaigalas, Michel R. Godefroid, Charlotte Froese Fischer
- 2009

Multiconfiguration expansions frequently target valence correlation and correlation between valence electrons and the outermost core electrons. Correlation within the core is often neglected. A largeâ€¦ (More)

Multiconfiguration wave function expansions combined with configuration interaction methods are a method of choice for complex atoms where atomic state functions are expanded in a basis ofâ€¦ (More)

- Daniel Baye, Livio Filippin, Michel R. Godefroid
- Physical review. E, Statistical, nonlinear, andâ€¦
- 2014

The Lagrange-mesh method is an approximate variational method taking the form of equations on a grid because of the use of a Gauss quadrature approximation. With a basis of Lagrange functionsâ€¦ (More)

Ab initio multiconfiguration calculations are performed for the oscillator strengths of the Î» = 4238 Ã…, 4262 Ã…, 4297 Ã… Tc I resonance lines of astrophysical interest. Electron correlation is treatedâ€¦ (More)