The renormalized charged scalar current in the Reissner-Nordstr\'om-de Sitter spacetime
- Resource Type
- Working Paper
- Authors
- Klein, Christiane; Zahn, Jochen
- Source
- Phys. Rev. D 104, 025009 (2021)
- Subject
- General Relativity and Quantum Cosmology
- Language
We perform a Hadamard point-split renormalization of the current density $j_\nu$ of a charged scalar field in a Reissner-Nordstr\"om-de Sitter spacetime. We compute numerically the expectation values of the components $j_r$ and $j_t$ in the Unruh state in the exterior region and study their dependence on the field parameters and the position.
Comment: 12 pages, 5 figures, version as accepted for PRD