  Strongly correlated electron systems host a variety of poorly understood
correlations in their high temperature normal state. Unlike ordered phases
defined by order parameters, these normal state phases are often defined
through unconventional properties such as strange metallic transport or
spectroscopic pseudogaps. Characterizing the microscopic correlations in the
normal state is necessary to elucidate mechanisms that lead to these properties
and their connection to ground state orders. Here we establish the presence of
intertwined charge and spin stripes in the strange metal normal state of the
Hubbard model using determinant quantum Monte Carlo calculations. The charge
and spin density waves constituting the stripes are fluctuating and
short-ranged, yet they obey a mutual commensurability relation and remain
microscopically interlocked, as evidenced through measurements of three-point
spin-spin-hole correlation functions. Our findings demonstrate the ability of
many-body numerical simulations to unravel the microscopic correlations that
define quantum states of matter.
