  We use the collective field theory known for the Calogero-Sutherland model to
study a variety of low-energy properties. These include the ground state energy
in a confining potential upto the two leading orders in the particle number,
the dispersion relation of sound modes with a comparison to the two leading
terms in the low temperature specific heat, large amplitude waves, and single
soliton solutions. The two-point correlation function derived from the
dispersion relation of the sound mode only gives its nonoscillatory asymptotic
behavior correctly, demonstrating that the theory is applicable only for the
low-energy and long wavelength excitations of the system.
