  The high-temperature superconducting cuprates host unidirectional spin- and
charge-density-wave orders that can intertwine with superconductivity in
non-trivial ways. While the charge components of these stripes have now been
observed in nearly all cuprate families, their detailed evolution with doping
varies across different materials and at high and low temperatures. We address
this problem using non-perturbative determinant quantum Monte Carlo
calculations for the three-band Hubbard model. Using an efficient
implementation, we can resolve the model's fluctuating spin and charge
modulations and map their evolution as a function of the charge transfer energy
and doping. We find that the incommensurability of the charge modulations is
decoupled from the spin modulations and decreases with hole doping, consistent
with experimental measurements at high temperatures. These findings support the
proposal that the high-temperature charge correlations are distinct from the
intertwined stripe order observed at low-temperature and in the single-band
Hubbard model.
