Solutions to the Dirac equation in Kerr-Newman geometries including the black-hole region

Abstract

We investigate the Dirac equation in Kerr-Newman space-time, using horizon penetrating coordinates (Eddington-Finkelstein-Coordinates) and the Newman-Penrose formalism to separate the equation into radial and angular systems of ordinary differential equations, and deriving the asymptotics of the radial solutions at infinity and at the Cauchy horizon.(c) 2022 Elsevier B.V. All rights reserved.