Reply to the Comment on "Resonant Spectra and the Time Evolution of the   Survival and Nonescape Probabilities"
  In our paper [Phys. Rev. Lett. 74, 337 (1995)], we derived an exact expression for the survival and nonescape probabilities as an expansion in terms of resonant states. It was shown that these quantities exhibit at long times a different behavior. Although both decay as a power law, they have different exponents. In this paper we show that, contrary to the claim in the Comment of R. M. Cavalcanti (quant-ph/9704023), the nonescape probability decay for long times as an inverse power law. 
G. Garcia-Calderon, J. L. Mateos and M. Moshinsky (Instituto de   Fisica, UNAM, Mexico)