Strings and black holes

Details Strings and black holes Strings and black holes

1999-12-22

arxiv.org/abs/hep-th/9912224v1

Annalen Phys. 11 (2000) 1; Grav.Cosmol.Suppl. 6 (2000) 63-71

Physics

High Energy Physics

High Energy Physics - Theory

12 pages, uses annalen.cls, contribution to the proceedings of the "Journees Relativistes 99" (Weimar, Sept 1999)

Scientific paper

10.1002/(SICI)1521-3889(200005)9

I review some recent work (done in collaboration with G. Veneziano) which clarifies the existence of a correspondence between self-gravitating fundamental string states and Schwarzschild black holes. The main result is a detailed calculation showing that self-gravity causes a typical string state of mass M to shrink, as the string coupling g^2 increases, down to a compact string state whose mass, size, entropy and luminosity match (for the critical value g_c^2 = (M sqrt{alpha'})^{-1}) those of a Schwarzschild black hole. This confirms the idea that the entropy of black holes can be accounted for by counting string states, and suggests that the level spacing of the quantum states of Schwarzschild black holes is exponentially small, and very much blurred by radiative effects.

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