Black Holes and Naked Singularities in Low Energy Limit of String Gravity with Modulus Field

Abstract

We show that the black hole solutions of the effective string theory action, where one-loop effects that couple the moduli to gravity via a Gauss-Bonnet term are taken into account, admit primary scalar hair. The requirement of absence of naked singularities imposes an upper bound on the scalar charges.

more details are added and some misprint are corrected

References in corpus (4)

• Singularity-free cosmological solutions in quadratic gravity
• Spherical Black Holes cannot Support Scalar Hair
• Non-Singular Cosmological Models in String Gravity with Second Order Curvature Corrections
• Primary scalar hair in dilatonic theories with modulus fields

Cited by in corpus (4)

• Black Hole Relics in String Gravity: Last Stages of Hawking Evaporation
• Global properties of dilatonic Gauss-Bonnet black holes
• Multi-scalar black holes with contingent primary hair: Mechanics and stability
• Asymptotic properties of black hole solutions in dimensionally reduced Einstein-Gauss-Bonnet gravity