  The propagation of a free massless scalar field in a 1 + 1 dimensional
Minkowski space modeling a wormhole is considered. The wormhole model consists
on two timelike trajectories, which represent the entrance and the exit of the
wormhole, connected via some transfer function that specifies how incoming
modes that reach the entrance are transferred to the exit. We find that
particles and energy fluxes are generically produced except for transfer
functions that represent global conformal transformations. We consider several
examples involving exit trajectories which are assymptotically inertial,
asymptotically null and also involving a faster-than-light motion to illustrate
the peculiarities of the emitted energy fluxes and quantum correlations.
