  In this paper, we investigate the Unruh radiation in the Bohmian field theory
on a shape dynamics background setting. Since metric and metric momentum are
real quantities, the integral kernel to invert the Lichnerowicz-York equation
for first order deviations due to existence of matter terms turns out to be
real. This fact makes the interaction Hamiltonian real. On the other hand, the
only contribution to guarantee the existence of Unruh radiation has to come
from the imaginary part of the temporal part of the wave functional. We have
proved the existence of Unruh radiation in this setting. It is also important
that we have found the Unruh radiation via an Unruh-DeWitt detector in a theory
where there is no Lorentz symmetry and no conventional space-time structure.
