  We numerically calculate the local density of states (LDOS) of a
one-dimensional Mott insulator with open boundaries, which is modelled
microscopically by a (extended) Hubbard chain at half filling. In the Fourier
transform of the LDOS we identify several dispersing features corresponding to
propagating charge and spin degrees of freedom, thus providing a visualisation
of the spin-charge separation in the system. We also consider the effect of an
additional boundary potential, which, if sufficiently strong, leads to the
formation of a boundary bound state which is clearly visible in the LDOS as a
non-dispersing feature inside the Mott gap.
