Moretti and Steidl proposed that a Cater-like vacuum restricted to a Bertotti-Robinson region has vanishing entropy even though these are present, and Unruh showed that one arises due to the existence of causally disconnected regions of space in a uniformly accelerated frame.
Moretti and Steidl proposed that a Cater-like vacuum restricted to a Bertotti-Robinson region has vanishing entropy even though these are present, and Unruh showed that one arises due to the existence of causally disconnected regions of space in a uniformly accelerated frame. The strong rigidity theorem states that, for a stationary spacetime, it is actually a similar object named for Killing, and a certain information paradox can be resolved by assuming that quantum perturbations in one can allow information to escape through them. Bardeen, Carter, and Hawking proposed that its surface area is analogous to entropy for a stationary axisymmetric solution of the Einstein equations, and it is generally regarded as a null hypersurface. Hawking radiation can tunnel through, FTP, what boundary most often associated with black holes, beyond which light cannot reach an outside observer?
Moretti and Steidl proposed that a Cater-like vacuum restricted to a Bertotti-Robinson region has vanishing entropy even though these are present, and Unruh showed that one arises due to the existence of causally disconnected regions of space in a uniformly accelerated frame.
{event horizon}s