The fuzzball proposal for black holes

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SUMMARY

The fuzzball proposal for black holes, introduced by Samir Mathur, posits that for a black hole with entropy S, there exist exp S horizon-free non-singular solutions known as fuzzballs. These solutions serve as the microstates of the black hole, differing from the traditional black hole description at the horizon scale. The invited review by Kostas Skenderis and Marika Taylor emphasizes the application of AdS/CFT methods in evaluating the proposal, particularly for 2 and 3 charge black holes in the D1-D5 system. Current evidence supports the fuzzball concept, indicating potential resolutions to issues like Hawking radiation and information loss, though further advancements will necessitate moving beyond the supergravity approximation.

PREREQUISITES
  • Understanding of black hole thermodynamics
  • Familiarity with AdS/CFT correspondence
  • Knowledge of string theory concepts
  • Basic principles of quantum gravity
NEXT STEPS
  • Research the implications of the fuzzball proposal on Hawking radiation
  • Study the D1-D5 system in string theory
  • Explore advanced AdS/CFT techniques for black hole analysis
  • Investigate the relationship between fuzzballs and black hole information paradox
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Physicists, particularly those specializing in high energy physics, string theory researchers, and anyone interested in the theoretical aspects of black hole physics and quantum gravity.

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The fuzzball proposal for black holes
Authors: Kostas Skenderis, Marika Taylor
Comments: 106 pages, invited review for Physics Reports
Subjects: High Energy Physics - Theory (hep-th); Astrophysics (astro-ph); General Relativity and Quantum Cosmology (gr-qc)

The fuzzball proposal states that associated with a black hole of entropy S there are exp S horizon-free non-singular solutions that asymptotically look like the black hole but generically differ from the black hole up to the horizon scale. These solutions, the fuzzballs, are considered to be the black hole microstates while the original black hole represents the average description of the system. The purpose of this report is to review current evidence for the fuzzball proposal, emphasizing the use of AdS/CFT methods in developing and testing the proposal. In particular, we discuss the status of the proposal for 2 and 3 charge black holes in the D1-D5 system, presenting new derivations and streamlining the discussion of their properties. Results to date support the fuzzball proposal but further progress is likely to require going beyond the supergravity approximation and sharpening the definition of a ``stringy fuzzball''. We outline how the fuzzball proposal could resolve longstanding issues in black hole physics, such as Hawking radiation and information loss. Our emphasis throughout is on connecting different developments and identifying open problems and directions for future research.

This is the first time i have seen any thing about fuzzballs, where did this idea come from?
 
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