  We quantify the quantum correlations between two accelerated detectors
coupled to a scalar field in a cavity. It has been realized that an accelerated
detector will experience a thermal bath, which is termed the Unruh effect. We
examine the similarities and differences for quantum correlations regarding
either temperature or acceleration. As the accelerations (resp. temperatures)
of the detectors increase, the entanglement decreases to zero at some instant
but the mutual information (resp. discord) can be amplified. As the
accelerations increase but are in opposite directions, the quantum correlations
decay. Importantly, we also reveal that larger quantum correlations can appear
in certain nonequilibrium scenarios in which either the acceleration difference
or the coupling difference becomes significant.
