  We found cosmological solution of the 6D standing wave braneworld model
generated by gravity coupled to a massless scalar phantom-like field. By
obtaining a full exact solution of the model we found a novel dynamical
mechanism in which the anisotropic nature of the primordial metric gives rise
to expansion of three spatial brane dimensions and affectively reduction of
other spatial directions. This dynamical mechanism can be relevant for
dimensional reduction in string and other higher dimensional theories in the
attempt of getting a 4D isotropic expanding space-time.
