  We apply the Bogoliubov transformations in order to connect two different
vacuums, one~located at past infinity and another located at future infinity
around a black hole inside the scenario of the nonlinear theory of massive
gravity. The presence of the extra degrees of freedom changes the behavior of
the logarithmic singularity and, as a consequence, the relation between the two
Bogoliubov coefficients. This has an effect on the number of particles, or
equivalently, on the black hole temperature perceived by observers defining the
time arbitrarily.
