When matter is falling into a black hole, the associated information becomes unavailable to the black hole's exterior. If the black hole disappears by Hawking evaporation, the information seems to be lost in the singularity, leading to Hawking's information paradox: the unitary evolution seems to be broken, because a pure separate quantum state can evolve into a mixed one.
This article proposes a new interpretation of the black hole singularities, which restores the information conservation. For the Schwarzschild black hole, it presents new coordinates, which move the singularity at the future infinity (although it can still be reached in finite proper time). For the evaporating black holes, this article shows that we can still cure the apparently destructive effects of the singularity on the information conservation. For this, we propose to allow the metric to be degenerate at some points, and use the singular semiriemannian geometry. This view, which results naturally from Ashtekar's new variables formulation of Einstein's equation, repairs the incomplete geodesics.
The reinterpretation of singularities suggested here allows (in the context of standard General Relativity) the information conservation and unitary evolution to be restored, both for eternal and for evaporating black holes.
|Keywords||Black hole information paradox General Relativity Hawking paradox Singularities in General Relativity Cosmic Censorship|
|External links||This entry has no external links. Add one.|
|Through your library||Only published papers are available at libraries|
Similar books and articles
Robert M. Wald (1992). "Weak" Cosmic Censorship. PSA: Proceedings of the Biennial Meeting of the Philosophy of Science Association 1992:181 - 190.
James Mattingly (2001). Singularities and Scalar Fields: Matter Theory and General Relativity. Proceedings of the Philosophy of Science Association 2001 (3):S395-.
Peter Bokulich (2011). Interactions and the Consistency of Black Hole Complementarity. International Studies in the Philosophy of Science 25 (4):371-386.
D. J. (2001). The Limits of Information. Studies in History and Philosophy of Science Part B 32 (4):511-524.
Peter Bokulich (2005). Does Black Hole Complementarity Answer Hawking's Information Loss Paradox? Philosophy of Science 72 (5):1336-1349.
John Earman (1992). Cosmic Censorship. PSA: Proceedings of the Biennial Meeting of the Philosophy of Science Association 1992:171 - 180.
Peter Bokulich (2001). Black Hole Remnants and Classical Vs. Quantum Gravity. Proceedings of the Philosophy of Science Association 2001 (3):S407-.
G. Belot, J. Earman & and L. Ruetsche (1999). The Hawking Information Loss Paradox: The Anatomy of Controversy. British Journal for the Philosophy of Science 50 (2):189-229.
Added to index2010-04-09
Total downloads4 ( #178,675 of 549,087 )
Recent downloads (6 months)1 ( #63,317 of 549,087 )
How can I increase my downloads?