  We report calculations for electronic ground states of parabolically confined
quantum dots for up to 30 electrons based on the quantum Monte Carlo method.
Effects of the electron-electron interaction and the response to a magnetic
field are exposed. The wavefunctions and the ground state energies are compared
with purely classical calculations performed with a comprehensive Molecular
Dynamics code. For the chosen well parameters a close correspondence in the
overall shape of electron density distribution is found even for small number
of electrons, while the detailed radial distributions show the effects of Pauli
principle in the quantal case.
