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Paper   IPM / Physic / 8017
School of Physics
  Title:   Born-Infeld Corrections to the Entropy Function Of Hetetoric Black Holes
  Author(s):  B. Chandrasekhar
  Status:   Published
  Journal: Braz J Phys
  No.:  2A
  Vol.:  37
  Year:  2007
  Pages:   349-357
  Supported by:  IPM
  Abstract:
We use the black hole entropy function to study the effect of Born-Infeld terms on the entropy of spherically symmetric extremal black holes in heterotic string theory in four dimensions. We show that the Born-Infeld terms are capable of stretching the horizon of a small black hole and the resulting entropy is finite. We add higher curvature terms of the Gauss-Bonnet type and study the resulting attractor equations. In the α′→ 0 limit, our results are in conformity with the ones for standard two charge black holes in heterotic string theory.

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