Some remarks on 't Hooft's S-matrix for black holes. Itzhaki, N. .
abstract   bibtex   
We discuss the limitations of 't Hooft's proposal for the black hole S-matrix. We find that the validity of the S-matrix implies violation of the semi-classical approximation at scales large compared to the Planck scale. We also show that the effect of the centrifugal barrier on the S-matrix is crucial even for large transverse distances.
@online{itzhaki,
  author       = {Itzhaki, Nissan},
  title        = {Some remarks on {'t Hooft's} {S}-matrix for black holes},
  date         = {1996-03-11},
  version      = 1,
  langid       = {english},
  langidopts   = {variant=american},
  eprinttype   = {arxiv},
  eprint       = {hep-th/9603067},
  annotation   = {An \texttt{online} reference from arXiv. Note the
                  \texttt{eprint} and \texttt{eprinttype} fields. Also note that
                  the arXiv reference is transformed into a clickable link if
                  \texttt{hyperref} support has been enabled},
  abstract     = {We discuss the limitations of 't Hooft's proposal for the
                  black hole S-matrix. We find that the validity of the S-matrix
                  implies violation of the semi-classical approximation at
                  scales large compared to the Planck scale. We also show that
                  the effect of the centrifugal barrier on the S-matrix is
                  crucial even for large transverse distances.},
}
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