The fuzzball proposal for black holes

By Kostas Skenderis, Marika Taylor. 2008

421 citations recorded by the source corpus.

Abstract 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.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics, Statistical and Nonlinear Physics

View Paper: https://www.semanticscholar.org/paper/007512ce378b268a7023ac9564696f22bc46bfb9

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Astronomy and Astrophysics

1. S. Raju
2. V. Hubeny
3. N. Warner
4. D. Harlow
5. I. Bena
6. K. Papadodimas
7. M. Rangamani
8. J. Boer

In Nuclear and High Energy Physics

1. S. Raju
2. D. Harlow
3. V. Hubeny
4. I. Bena
5. N. Warner
6. J. Boer
7. M. Rangamani
8. K. Papadodimas

In Statistical and Nonlinear Physics

1. S. Raju
2. D. Harlow
3. V. Hubeny
4. I. Bena
5. N. Warner
6. K. Papadodimas
7. Vijay Balasubramanian
8. D. Marolf

Citations in the corpus

• Lessons from the information paradox (2020, background): “In terms of the correlators above, the fuzzball proposal [43, 44] suggests that we should drop the idea that CAB ≥ 2.”
• Exotic Branes in String Theory (2012, background): “2) is the so-called D1-D5 system and the puffed-up configuration of the KKM is nothing but the Lunin–Mathur geometries [84,85] that played an essential role in Mathur’s conjecture [32–36] The last one (5.”
• Transcending the ensemble: baby universes, spacetime wormholes, and the order and disorder of black hole information (2020, background): “[17, 19, 24, 29, 125–129], the non-violent non-locality proposal [20, 22, 30]), proposals emphasizing the bulk Wheeler-DeWitt equation [130, 131], the black hole final state proposal [14], and perhaps other proposals as well.”
• Global structure of five-dimensional fuzzballs (2013, background): “The fact that these solutions have a very long AdS throat means that this issue can be addressed directly by using the AdS/CFT correspondence [14, 38, 39].”
• An infalling observer in AdS/CFT (2012, background): “For example, several regular solutions, with the same charges as the black hole, have been found in several theories (see [42] for a review and references to the very extended literature).”
• Time Dependence of Hawking Radiation Entropy (2013, background): “Interest in black hole information [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 6”
• Comments on black holes I: the possibility of complementarity (2012, background): “We note that the fuzzball program provides a consistent picture of all issues in the quantum dynamics of black holes (see [37–41] for reviews).”
• Black holes as effective geometries (2008, methodology): “A more up-to-date review, with an emphsis on AdS/CFT tests of the proposal, can be found in [ 105 ].”
• Quantizing N = 2 multicenter solutions (2008, background): “ticentered black hole conguration a state obtained from quantizing a given space of smooth solution belongs. This is in particular of relevance for the \fuzzball" proposal [10] (see also review [19, 30, 63]) which, in its most optimistic form, would imply that all states that make up multicente”
• Brownian Motion in AdS/CFT (2008, positive): “Any single microstate is horizon-free, but the typical microstates are expected to exhibit the characteristic features of black hole spacetimes, which has been confirmed explicitly for some concrete systems; see [15, 16, 17, 18] for reviews.”
• Black holes in general relativity (2009, neutral): “See [55] for a survey.”
• Habemus superstratum! A constructive proof of the existence of superstrata (2015, background): “See [30–45] for some developments in that area.”
• Extremal surfaces as bulk probes in AdS/CFT (2012, background): “However, the impressive amount of information extractible from these correlators comes with a cost: since the insertion points are not located on the 3 In fact as later demonstrated in [19], by examining the detailed analytic structure of such correlation functions, one can tell apart spacetimes wit”
• A Holographic View on Physics out of Equilibrium (2010, background): “In fact, even such subtle differences as the fuzzball picture of the black hole [197, 198] and a genuine eternal black hole geometry would produce glaringly different signatures in these correlators [199].”