Presented By: HET Seminars
HET Seminar | The Black Hole Causality Paradox
Samir Mathur (Ohio State University)
The black hole information paradox is really a combination of two problems: the causality paradox and the entanglement problem. The causality paradox arises because in the semiclassical approximation infalling matter gets causally trapped inside its own horizon; it is therefore unable to send its information back to infinity if we disallow propagation outside the light cone. We show that the causality paradox can be resolved by local effects in the fuzzball paradigm, and contrast this resolution with other proposed paradigms where nonlocal effects like wormholes are required to exist.
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