Black hole mining in the RST model

TL;DR

This paper investigates whether black holes can be mined in a 1+1-dimensional model, concluding that such mining does not occur, which has implications for the black hole information paradox.

Contribution

It demonstrates that in the RST model, black hole mining is not possible, even with additional matter sources, challenging previous assumptions about black hole energy extraction.

Findings

Black hole lifetime is unaffected by extra matter sources.

Mining does not occur in the RST model.

Implications for the black hole information paradox.

Abstract

We consider the possibility of mining black holes in the 1+1-dimensional dilaton gravity model of Russo, Susskind and Thorlacius. The model correctly incorporates Hawking radiation and back-reaction in a semiclassical expansion in 1/N, where N is the number of matter species. It is shown that the lifetime of a perturbed black hole is independent of the addition of any extra apparatus when realized by an arbitrary positive energy matter source. We conclude that mining does not occur in the RST model and comment on the implications of this for the black hole information paradox.