Born-infeld corrections to the entropy function of heterotic black holes
Chandrasekhar, B. [UNESP]
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We use the black hole entropy function to study the effect of Born-Infeld terms on the entropy of extremal black holes in heterotic string theory in four dimensions. We find, that after adding a set of higher curvature terms to the effective action, attractor mechanism, works and Born-Infeld terms contribute to the stretching of near horizon geometry. In the α′ → 0 limit, the solutions of attractor equations for moduli, fields and the resulting entropy, are in conformity with the ones for standard two charge black holes.
Black hole entropy, Born-infeld terms, Extremal black holes, String theory
Brazilian Journal of Physics, v. 37, n. 2 A, p. 349-357, 2007.