Gauge Symmetry Enhancement and N = 2 Supersymmetric Quantum Black Holes in Heterotic String Vacua

Abstract

N=2 supersymmetric quantum black holes in the heterotic S-T-U model are presented. In particular three classes of axion-free quantum black holes with half the N=2, D=4 supersymmetries unbroken are considered. First, these quantum black holes are investigated at generic points in moduli space. Then linearized non-abelian black holes are investigated representing a subset of non-abelian black hole solutions at critical points of perturbative gauge symmetry enhancement in moduli space. It is shown that the entropy of linearized non-abelian black holes can be obtained, starting at non-critical points in moduli space, by continuous variation of the moduli and a proper identification of the non-abelian charges.

20 pages, final revised version

References in corpus (5)

• Black Holes and Critical Points in Moduli Space
• String-Unification, Universal One-Loop Corrections and Strongly Coupled Heterotic String Theory
• Entropy of N=2 black holes and their M-brane description
• Subleading contributions from instanton corrections in N = 2 supersymmetric black hole entropy
• Duality Invariant Non-Extreme Black Holes in Toroidally Compactified String Theory

Cited by in corpus (5)

• AdS_3 Gravity and Conformal Field Theories
• Classical and Quantum Analysis of Repulsive Singularities in Four Dimensional Extended Supergravity
• Non-perturbative black holes in Type-IIA String Theory vs. the No-Hair conjecture
• Quantum Probes of Repulsive Singularities in N = 2 Supergravity
• Regular 3-charge 4D black holes and their microscopic description