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The black hole information problem: past, present, and future.

Donald Marolf1

  • 1Department of Physics, University of California, Santa Barbara, CA 93106-9530, United States of America.

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|June 8, 2017
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The black hole information problem questions information loss during black hole evaporation. Recent proposals focus on restoring unitarity, offering a guide to current research.

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Area of Science:

  • Theoretical Physics
  • Quantum Gravity
  • Astrophysics

Background:

  • The black hole information problem is a long-standing puzzle in theoretical physics.
  • It arises from the apparent conflict between general relativity and quantum mechanics regarding information loss.
  • Hawking radiation suggests black holes evaporate, potentially destroying information.

Purpose of the Study:

  • To provide a broad overview of the black hole information problem.
  • To highlight fundamental issues and recent resolution proposals.
  • To serve as a guide to the current literature on the topic.

Main Methods:

  • Literature review and synthesis.
  • Focus on resolutions that restore naive unitarity.
  • Emphasis on conceptual understanding rather than exhaustive detail.

Main Results:

  • Identification of key challenges in resolving the information paradox.
  • Categorization of recent theoretical proposals for information recovery.
  • Highlighting the importance of unitarity in quantum gravity.

Conclusions:

  • Resolving the black hole information problem is crucial for a complete theory of quantum gravity.
  • Restoring unitarity is a primary goal for many proposed solutions.
  • The field is actively developing with diverse theoretical approaches.