84 citations · 236 across the 17 of their papers we have counts for
17 papers
Consistency between adiabatic and nonadiabatic geometric phases for nonselfadjoint hamiltonians
David Viennot, Arnaud Leclerc, Georges Jolicard +1
We show that the adiabatic approximation for nonselfadjoint hamiltonians seems to induce two non-equal expressions for the geometric phase. The first one is related to the spectral…
A complex Gaussian approach to molecular photoionization
Abdallah Ammar, Lorenzo Ugo Ancarani, Arnaud Leclerc
We develop and implement a Gaussian approach to calculate partial cross-sections and asymmetry parameters for molecular photoionization. Optimal sets of complex Gaussian-type orbit…
Multicenter integrals involving complex Gaussian type functions
Abdallah Ammar, Arnaud Leclerc, Lorenzo Ugo Ancarani
Multicentric integrals that involve a continuum state cannot be evaluated with the usual quantum chemistry tools and require a special treatment. We consider an initial molecular b…
Fitting continuum wavefunctions with complex Gaussians: Computation of ionization cross sections
Abdallah Ammar, Arnaud Leclerc, Lorenzo Ugo Ancarani
We implement a full nonlinear optimization method to fit continuum states with complex Gaussians. The application to a set of regular scattering Coulomb functions allows us to vali…
Calculating eigenvalues and eigenvectors of parameter-dependent hamiltonians using an adaptative wave operator method
Arnaud Leclerc, Georges Jolicard
We propose a wave operator method to calculate eigenvalues and eigenvectors of large parameter-dependent matrices, using an adaptative active subspace. We consider a hamiltonian wh…
Exotic states in the strong field control of H dissociation dynamics: From exceptional points to zero-width resonances
Arnaud Leclerc, David Viennot, Georges Jolicard +2
H is an ideal candidate for a detailed study of strong field coherent control strategies inspired by basic mechanisms referring to some specific photodissociation resonances.…