  The magnetic dipole (M1) and electric quadupole (E2) responses of
two-dimensional quantum dots with an elliptic shape are theoretically
investigated as a function of the dot deformation and applied static magnetic
field. Neglecting the electron-electron interaction we obtain analytical
results which indicate the existence of four characteristic modes, with
different $B$-dispersion of their energies and associated strengths.
Interaction effects are numerically studied within the time-dependent
local-spin-density theory, assessing the validity of the non-interacting
picture.
