  We make a detailed comparison between entanglement harvesting for uniformly
accelerated detectors in vacuum and static ones in a thermal bath at the Unruh
temperature and find that, for a small energy gap relative to the Heisenberg
energy of the detectors, static detectors in the thermal bath can harvest more
entanglement and possess a comparatively larger harvesting-achievable range
than the uniformly accelerated ones; however, as the energy gap grows
sufficiently large, the uniformly accelerated detectors are instead likely to
harvest more entanglement and possess a relatively larger harvesting-achievable
range than inertial ones in the thermal bath. In comparison with static
detectors in vacuum, there exist phenomena of acceleration-assisted
entanglement harvesting but never that of thermal-noise-assisted one. A notably
interesting feature is that, although both the amount of entanglement harvested
and the harvesting-achievable interdetector separation for static detectors in
a thermal bath are always a decreasing function of temperature, they are not
always so for uniformly accelerated detectors as acceleration (Unruh
temperature) varies, suggesting the existence of the anti-Unruh effect in the
entanglement harvesting phenomena of the accelerated detectors.
