  Using the `quantum optical approach' we propose a model of multiplicity
distributions in high energy collisions based on squeezed coherent states.
  We show that the k-mode squeezed coherent state is the most general one in
describing hadronic mulitiplicity distributions in particle collision
processes, describing not only $p \bar p$ collisions but $e^{+}e^{-}$, $\nu p$
and diffractive collisions as well.
  The reason for this phenomenological fit has been gained by working out a
microscopic theory in which the squeezed coherent sources arise naturally if
one considers the Lorentz squeezing of hadrons and works in the covariant phase
space formalism .
