141 citations · 269 across the 4 of their papers we have counts for
4 papers
Quantitative stability of certain families of periodic solutions in the Sitnikov problem
Jorge Galán, Daniel Núñez, Andrés Rivera
The Sitnikov problem is a special case of the restricted three-body problem where the primaries moves in elliptic orbits of the two-body problem with eccentricity and…
Electrically tunable GHz oscillations in doped GaAs-AlAs superlattices
J. Kastrup, R. Hey, K. H. Ploog +5
Tunable oscillatory modes of electric-field domains in doped semiconductor superlattices are reported. The experimental investigations demonstrate the realization of tunable, GHz f…
Dynamics of Electric Field Domains and Oscillations of the Photocurrent in a Simple Superlattice Model
L. L. Bonilla, J. Galan, J. A. Cuesta +2
A discrete model is introduced to account for the time-periodic oscillations of the photocurrent in a superlattice observed by Kwok et al, in an undoped 40 period AlAs/GaAs superla…
The wavefunction renormalization constant for the one- and two- band Hubbard hamiltonians in two dimensions
E. Louis, G. Chiappe, J. Galan +2
The wavefunction renormalization in the Hubbard model is studied, by using well tested mean field tecniques. The 'orthogonality catastrophe' is shown to exist, even in 2D, for dopi…