  The Su-Schrieffer-Heeger model describes fermions that hop on a
one-dimensional chain with staggered hopping amplitude, where the unit cell
contains two sites, or two sublattices. In this work we consider the
Su-Schrieffer-Heeger model with superconducting pairing and show that the
sublattice index acts as an additional quantum number in the classification of
Cooper pairs, giving rise to inter- and intra-sublattice odd-frequency pair
correlations in the bulk. Interestingly, this system behaves as a two band
superconductor where the bulk odd-frequency correlations depend solely on the
intrinsic staggering properties of the model. In general, odd-frequency
correlations coexist with even-frequency correlations in both the trivial and
topological phases, with comparable and even larger odd-frequency amplitudes at
the topological phase transition points at low frequencies, due to the closing
of the energy gap at these points. Furthermore, we also discuss how bulk
odd-frequency amplitudes are correlated with pseudo-gaps in the density of
states and also with a charge density wave that appears due to the chemical
potential imbalance between sublattices.
