In this paper we construct the BPS black hole generating solution of toroidally compactified string land M) theory, giving for it both the macroscopic and microscopic description. Choosing a proper U-duality gauge the latter will be given by a bound state made solely of D-branes. The axionic nature of the supergravity solution will be directly related to non-trivial angles between the constituent D-branes (type IIB configuration) or, in a T-dual gauge, to the presence of magnetic Aux on constituent D-brane worldvolumes (type IIA configuration). As expected, the four-dimensional axion fields arise from the dimensional reduction of non-diagonal metric tensor components or Kalb-Ramond B field components for type IIB or type ITA cases, respectively. Thanks to this result it is then now possible to fill the Still 56-dimensional U-duality orbit of N = 8 BPS black holes and to have a macroscopic and microscopic description of all of them.
|Titolo:||Regular BPS black holes: Macroscopic and microscopic description of the generating solution|
|Autori:||BERTOLINI M; M. TRIGIANTE|
|Data di pubblicazione:||2000|
|Digital Object Identifier (DOI):||10.1016/S0550-3213(00)00216-9|
|Appare nelle tipologie:||1.1 Journal article|