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gr-qc1999
Multidimensional Sigma-Model with Black Holes and p-Branes
Martin Rainer
The bosonic content of string theory in curved background of multidimensional structure with p-branes has a systematic geometrical description as an effective sigma-model of gravit…
gr-qc1999
On the fundamental length of quantum geometry and the black hole entropy
M. Rainer
The geometric operators of area, volume, and length, depend on a fundamental length l of quantum geometry which is a priori arbitrary rather than equal to the Planck length l_P. Th…