A review of the microscopic modeling of the 5-dim. black hole of IIB string theory

SPENTA R WADIA

Department of Theoretical Physics, Tata Institute of Fundamental Research, Homi Bhabha Road, Mumbai 400 005, India

Email: wadia@tifr.res.in

Abstract.

We review the theory of the microscopic modeling of the 5-dim. black hole of type IIB string theory in terms of the D₁-D₅ brane system. A detailed discussion of the low energy effective Lagrangian of the brane system is presented and the black hole micro-states are identified. These considerations are valid in the strong coupling regime of supergravity due to the non-renormalization of the low energy dynamics in this model. Using Maldacena duality and standard statistical mechanics methods one can account for black hole thermodynamics and calculate the absorption cross section and the Hawking radiation rates. Hence, at least in the case of this model black hole, since we can account for black hole properties within a unitary theory, there is no information paradox.

Keywords: Black holes; string theory; Hawking radiation.

Pacs Nos. 04.70.-s; 04.70.Dy; 11.25.-w