Quantum absorption properties of Kerr-Newman-de Sitter black hole

In this work, we utilize the Wentzel-Kramers-Brillouin (WKB) approximation to determine the Hawking temperature corresponding to the Kerr-Newman-de Sitter (KNdS) spacetime. Specifically, we calculate the low frequency absorption cross-section for the KNdS black hole in a charged scalar field and analyzed its dependence on the characteristics of the black hole. Through our research, we have established a correlation between the absorption cross-section (s(abs)) and the Hawking temperature (T-H) of the black hole, demonstrating an inverse proportionality between the two quantities. Furthermore, we also deduce the absorption cross-sections for Kerr-de Sitter, Reissner-Nordstrom-de Sitter, Schwarzschild-de Sitter and Schwarzschild black holes, and compare them with previously obtained results. The validity of our findings is demonstrated by these comparisons.