Dilatonic black holes in superstring gravity

Abstract

We solve the dilaton field equation in the background of a spherically symmetric black hole in type II superstring theory with $\alpha'^3$ corrections in arbitrary $d$ spacetime dimensions. We then apply this result to obtain a spherically symmetric black hole solution with $\alpha'^3$ corrections in superstring theory compactified on a torus, coupled to such dilaton. For this black hole we obtain its mass, entropy, temperature, specific heat, and free energy.Comment: V2: some small changes in the presentation; references and discussion added; results unchanged. Published version. arXiv admin note: text overlap with arXiv:0912.305