  The dynamics of a single hole in the t-J model on two- (2LL) and three- (3LL)
leg ladders is studied using a recently developed quantum Monte Carlo
algorithm. For the 2LL it is shown that in addition to the most pronounced
features of the spectral function, well described by the limit of strong
coupling along the rungs, a clear shadow band appears in the antibonding
channel. Moreover, both the bonding band and its shadow have a finite
quasiparticle (QP) weight in the thermodynamic limit. For strong coupling along
the rungs of the 3LL, the low-energy spectrum in the antisymmetric channel is
similar to a one-dimensional chain, whereas in the two symmetric channels it
resembles the 2LL. The QP weight vanishes in the antisymmetric channel, but is
finite in the symmetric one.
