Acceleration radiation and the Planck scale
  A uniformly accelerating observer perceives the Minkowski vacuum state as a thermal bath of radiation. We point out that this field-theory effect can be derived, for any dimension higher than two, without actually invoking very high energy physics. This supports the view that this phenomenon is robust against Planck-scale physics and, therefore, should be compatible with any underlying microscopic theory. 
I.Agullo, J.Navarro-Salas, G.J. Olmo, L. Parker