  Several experimental groups are currently working towards realizing
quasi-one-dimensional (1D) atom waveguides and loading them with ultracold
atoms. The dynamics becomes truly 1D in a regime (Tonks gas) of low
temperatures and densities and large positive scattering lengths for which the
transverse mode becomes frozen, in which case the many-body Schrodinger
dynamics becomes exactly soluble via a Fermi-Bose mapping theorem. In this
paper we review our recent work on the exact ground state and quantum dynamics
of 1D Tonks gases and assess the possibility of approaching the Tonks regime
using Bessel beam optical dipole traps.
