  The canonical thermodynamic properties of a one-dimensional system of
interacting spin-1/2 fermions with an attractive zero-range pseudo-potential
are investigated within an exact approach. The density operator is evaluated as
the statistical average of dyadics formed from a stochastic mean-field
propagation of independent Slater determinants. For an harmonically trapped
Fermi gas and for fermions confined in a 1D-like torus, we observe the
transition to a quasi-BCS state with Cooper-like momentum correlations and an
algebraic long-range order. For few trapped fermions in a rotating torus, a
dominant superfluid component with quantized circulation can be isolated.
