Black hole information, unitarity, and nonlocality

Preprint English OPEN
Giddings, Steven B. (2006)

The black hole information paradox apparently indicates the need for a fundamentally new ingredient in physics. The leading contender is nonlocality. Possible mechanisms for the nonlocality needed to restore unitarity to black hole evolution are investigated. Suggestions that such dynamics arises from ultra-planckian modes in Hawking's derivation are investigated and found not to be relevant, in a picture using smooth slices spanning the exterior and interior of the horizon. However, no simultaneous description of modes that have fallen into the black hole and outgoing Hawking modes can be given without appearance of a large kinematic invariant, or other dependence on ultra-planckian physics; a reliable argument for information loss thus has not been constructed. This suggests that strong gravitational dynamics is important. Such dynamics has been argued to be fundamentally nonlocal in extreme situations, such as those required to investigate the fate of information.
  • References (18)
    18 references, page 1 of 2

    [1] S. W. Hawking, “Breakdown Of Predictability In Gravitational Collapse,” Phys. Rev. D 14, 2460 (1976).

    [2] S. B. Giddings, “Black holes and massive remnants,” Phys. Rev. D 46, 1347 (1992) [arXiv:hep-th/9203059].

    [3] G. 't Hooft, “Dimensional reduction in quantum gravity,” arXiv:gr-qc/9310026.

    [4] L. Susskind, “The World as a hologram,” J. Math. Phys. 36, 6377 (1995) [arXiv:hepth/9409089].

    [5] R. Bousso, “A Covariant Entropy Conjecture,” JHEP 9907, 004 (1999) [arXiv:hepth/9905177]; “Holography in general space-times,” JHEP 9906, 028 (1999) [arXiv:hep-th/9906022].

    [6] R. Bousso, “The holographic principle,” Rev. Mod. Phys. 74, 825 (2002) [arXiv:hepth/0203101].

    [7] G. 't Hooft, “On The Quantum Structure Of A Black Hole,” Nucl. Phys. B 256, 727 (1985).

    [8] G. 't Hooft, “The Black Hole Interpretation Of String Theory,” Nucl. Phys. B 335, 138 (1990).

    [9] G. 't Hooft, “The Black hole horizon as a quantum surface,” Phys. Scripta T36, 247 (1991).

    [10] L. Susskind, L. Thorlacius and J. Uglum, “The Stretched horizon and black hole complementarity,” Phys. Rev. D 48, 3743 (1993) [arXiv:hep-th/9306069].

  • Metrics
    No metrics available
Share - Bookmark