1992/01/15 by Renata Kallosh, Рената Каллош · 5 citations
Physics and Astronomy · #Black Holes and Theoretical Physics #Noncommutative and Quantum Gravity Theories #Pulsars and Gravitational Waves Research #hep-th
paper · pdf · doi:10.1016/0370-2693(92)90482-j
published as Phys.Lett. B282 (1992) 80-88 · 14p
arxiv created 1992/01/15 · openalex publication_date 1992/05/01 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The effective action of N=2, d=4 supergravity is shown to acquire no quantum corrections in background metrics admitting super-covariantly constant spinors. In particular, these metrics include the Robinson-Bertotti metric (product of two 2-dimensional spaces of constant curvature) with all 8 supersymmetries unbroken. Another example is a set of arbitrary number of extreme Reissner-Nordström black holes. These black holes break 4 of 8 supersymmetries, leaving the other 4 unbroken. We have found manifestly supersymmetric black holes, which are non-trivial solutions of the flatness condition \cd2 = 0 of the corresponding (shortened) superspace. Their bosonic part describes a set of extreme Reissner-Nordström black holes. The super black hole solutions are exact even when all quantum supergravity corrections are taken into account.