Ghost-induced phase transition in the final stages of black hole evaporation

We explore a novel scenario in which a quantum-induced ghost instability drives the natural evolution of an evaporating Schwarzschild black hole toward a stable naked singularity. This process, arising from quadratic curvature corrections to the Einstein-Hilbert action at high energies, circumvents the inconsistencies associated with classical naked singularities. The onset of ghost-driven instability signals a phase transition that fundamentally alters black hole evaporation, rendering the information paradox moot as it merges with the singularity issue. Our findings suggest a new pathway for black hole evolution at high-energy scales, offering insights that may bridge key gaps until a full theory of quantum gravity is realized.