Exact Regular Black Hole Solutions with de Sitter Cores and Hagedorn
Fluid
Exact Regular Black Hole Solutions with de Sitter Cores and Hagedorn
Fluid
In this paper, we present three exact solutions to the Einstein field equations, each showing different black hole models. The first solution introduces a black hole with a variable equation of state, \( P=k(r)\rho \), that can represent both singular and regular black holes based on parameters \( M_0 \) …