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In this paper we construct a scattering theory for the massive and chargedDirac fields in the interiors of sub-extremal Kerr-Newman(-anti)-de Sitterblack holes. More precisely, we show existence, uniqueness and asymptoticcompleteness of scattering data for such Dirac fields from the event horizon ofthe black hole to the Cauchy horizon. Our approach relies on constructing thewave operators where the Hamiltonian of the full dynamics is time-dependent. Toprove asymptotic completeness, we use two methods. The first involves acomparison operator, while for the second we introduce and employ a symmetryoperator of the Dirac equation.

Scattering of Dirac Fields in the Interior of Kerr-Newman(-Anti)-de Sitter Black Holes via Comparison and Symmetry Operators