Accelerated detectors in Dirac vacuum: the effects of horizon   fluctuations
  We consider an Unruh-DeWitt detector interacting with a massless Dirac field. Assuming that the detector is moving along an hyperbolic trajectory, we modeled the effects of fluctuations in the event horizon using a Dirac equation with random coefficients. First, we develop the perturbation theory for the fermionic field in a random media. Further we evaluate corrections due to the randomness in the response function associated to different model detectors. 
C. H. G. Bessa, J. G. Duenas and N. F. Svaiter
hep-th gr-qc