On Quantum Special Kaehler Geometry

TL;DR

This paper analyzes the effective black hole potential in quantum-corrected special Kaehler geometry, identifying charge configurations for axion-free attractors and exploring geometric properties at critical points.

Contribution

It computes the black hole potential with quantum corrections in general N=2, d=4 special Kaehler geometry, and investigates attractor solutions and geometric invariants.

Findings

Identifies charge configurations supporting axion-free attractors.

Explains differences among configurations related to flat directions.

Calculates curvature tensors and non-symmetricity measures.

Abstract

We compute the effective black hole potential V of the most general N=2, d=4 (local) special Kaehler geometry with quantum perturbative corrections, consistent with axion-shift Peccei-Quinn symmetry and with cubic leading order behavior. We determine the charge configurations supporting axion-free attractors, and explain the differences among various configurations in relations to the presence of ``flat'' directions of V at its critical points. Furthermore, we elucidate the role of the sectional curvature at the non-supersymmetric critical points of V, and compute the Riemann tensor (and related quantities), as well as the so-called E-tensor. The latter expresses the non-symmetricity of the considered quantum perturbative special Kaehler geometry.