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gr-qc2026
Semiclassical Black Hole-White Hole transitions: an analytical treatment
Julio Arrechea, Stefano Liberati, Massimiliano Spadafora
Recent numerical studies of semiclassical gravity suggest that, in spherically symmetric black holes with both outer and inner horizons, the semiclassical instability of the inner…
gr-qc2025
Deep in the knotted black hole
Massimiliano Spadafora, Manar Naeem, MarÃa R. Preciado-Rivas +2
We consider the transition rate of a freely falling Unruh-DeWitt detector, coupled linearly to a massless scalar quantum field prepared in the Hartle-Hawking-Israel state, as a pro…
gr-qc2024
Singular excitement beyond the horizon of a rotating black hole
Sijia Wang, MarÃa Rosa Preciado-Rivas, Massimiliano Spadafora +1
Previous studies have shown that an Unruh-DeWitt (UDW) detector, when coupled linearly to a massless scalar field and permitted to fall radially into certain black holes, will exhi…