We have employed time-dependent local-spin density functional theory to analyze the multipole spin and charge density excitations in GaAs-AlGaAs quantum dots. The on-plane transferred momentum degree of freedom has been taken into account, and the wave-vector dependence of the excitations is discussed. In agreement with previous experiments, we have found that the energies of these modes do not depend on the transferred wave-vector, although their intensities do. Comparison with a recent resonant Raman scattering experiment [C. Sch\"uller et al, Phys. Rev. Lett {\bf 80}, 2673 (1998)] is made. This allows to identify the angular momentum of several of the observed modes as well as to reproduce their energies.
@article{arxiv.cond-mat/9907321,
title = {Wave-vector dependence of spin and density multipole excitations in quantum dots},
author = {Manuel Barranco and Leonardo Colletti and Agusti Emperador and Enrico Lipparini and Marti Pi and Llorens Serra},
journal= {arXiv preprint arXiv:cond-mat/9907321},
year = {2009}
}