Corrections to macroscopic supersymmetric black hole entropy

Dec, 1998
10 pages
Published in:
  • Phys.Lett.B 451 (1999) 309-316
e-Print:
Report number:
  • SPIN-1998-11,
  • THU-98-44

Citations per year

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Abstract:
We determine the corrections to the entropy of extremal black holes arising from terms quadratic in the Riemann tensor in N=2,D=4N=2, D=4 supergravity theories. We follow Wald's proposal to modify the Bekenstein-Hawking area law. The new entropy formula, whose value only depends on the electric/magnetic charges, is expressed in terms of a single holomorphic function and is consistent with electric-magnetic duality. For string effective field theories arising from Calabi-Yau compactifications, our result for the entropy of a certain class of extremal black-hole solutions fully agrees with the counting of microstates performed some time ago by Maldacena, Strominger, Witten and by Vafa.
Note:
  • 9 pages, LaTeX; one reference corrected
  • black hole
  • supersymmetry
  • entropy: correction
  • supergravity
  • string model
  • space-time: Calabi-Yau
  • compactification