We introduce the new 5D braneworld with the real scalar field in the bulk.
The model represents the brane which bounds collective oscillations of
gravitational and scalar field standing waves. These waves are out of phase,
i.e. the energy of oscillations passes back and forth between the scalar and
gravitational waves. When the amplitude of the standing waves is small the
brane width and the size of the horizon in extra space are of a same order of
magnitude, and matter fields are localized in extra dimension due to the
presence of the horizon. When oscillations are large trapping of matter fields
on the brane is provided mainly by the pressure of bulk waves. It is shown that
in this case the mass of the lightest KK mode is determined by the smaller
energy scale corresponding to the horizon size, i.e. these modes can be created
in accelerators at relatively low energies, which gives a chance to check the
present model.Comment: The version accepted by Advances in High Energy Physic
