Remarks on the Atick-Witten behavior and strings near black hole horizons

We present arguments pointing to a behavior of the string free energy in the presence of a black hole horizon similar to the Atick-Witten dependence on temperature beyond the Hagedorn transition. We give some evidence based on orbifold techniques applied to Rindler space and further support is found within a Hamiltonian approach. However, we argue that the interpretation in terms of a reduction of degrees of freedom is confronted by serious problems. Finally, we point out the problems concerning heuristic red-shift arguments and the local interpretation of thermodynamical quantities.

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