The Black hole horizon as a quantum surface
@article{Hooft1991TheBH, title={The Black hole horizon as a quantum surface}, author={Gerard 't Hooft}, journal={Physica Scripta}, year={1991}, volume={1991}, pages={247-252} }
In previous work it was argued why it is practically inevitable to assume the existence of an S-matrix that describes particle absorption and production by a black hole, and the relationship between this S-matrix and string theory was derived. The physical interpretation of the corresponding mathematical expressions however is quite different from string theory. We have an algebra of operators now defined on a two-dimensional Euclidean "world sheet". The algebra simplifies if one restricts it…
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