The DOI matches its Crossref record; 77 of the 77 references it cites were found in a registry or an index.
Quantum geometry of isolated horizons and black hole entropy
Open accessAbstract
Using the classical Hamiltonian framework of [1] as the point of departure, we carry out a non-perturbative quantization of the sector of general relativity, coupled to matter, admitting non-rotating isolated horizons as inner boundaries.The emphasis is on the quantum geometry of the horizon.Polymer excitations of the bulk quantum geometry pierce the horizon endowing it with area.The intrinsic geometry of the horizon is then described by the quantum Chern-Simons theory of a U(l) connection on a punctured 2-sphere, the horizon.Subtle mathematical features of the quantum Chern-Simons theory turn out to be important for the existence of a coherent quantum theory of the horizon geometry.Heuristically, the intrinsic geometry is flat everywhere except at the punctures.The distributional curvature of the U(l) connection at the punctures gives rise to quantized deficit angles which account for the overall curvature.For macroscopic black holes, the logarithm of the number of these horizon microstates is proportional to the area, irrespective of the values of (non-gravitational) charges.Thus, the black hole entropy can be accounted for entirely by the quantum states of the horizon geometry.Our analysis is applicable to all nonrotating black holes, including the astrophysically interesting ones which are very far from extremality.Furthermore, cosmological horizons (to which statistical mechanical considerations are known to apply) are naturally incorporated.An effort has been made to make the paper self-contained by including short reviews of the background material.
Overview
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Integrity signals
Registry
Cites
Statistics
Verification
Claims the paper makes
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Self-check
Percentages, sums and reported differences re-computed from the paper’s own numbers.
The self-check needs the paper’s full text.
Citations
Cites
Particle creation by black holes
Hawking, S. W. (1975) · Communications In Mathematical Physics · doi:10.1007/bf02345020 · Cited by 13,106 · cited 2×
“Thus, our result agrees with Hawking’s semi-classical calculation [37] in the sector of the quantum theory on which the Barbero-Immirzi parameter γ equals γ0 with”
BackgroundResultBekenstein, J. D. (1973) · Physical Review D · doi:10.1103/physrevd.7.2333 · Cited by 7,555
Cosmological event horizons, thermodynamics, and particle creation
Gibbons, G. W., & Hawking, S. W. (1977) · Physical Review D · doi:10.1103/physrevd.15.2738 · Cited by 3,192
Microscopic origin of the Bekenstein-Hawking entropy
Strominger, A., & Vafa, C. (1996) · Physics Letters B · doi:10.1016/0370-2693(96)00345-0 · Cited by 3,072
Hirsch, M. W. (1976) · Graduate texts in mathematics · doi:10.1007/978-1-4684-9449-5 · Cited by 2,613
Black hole entropy is the Noether charge
Wald, R. M. (1993) · Physical Review D · doi:10.1103/physrevd.48.r3427 · Cited by 2,496
Generalized second law of thermodynamics in black-hole physics
Bekenstein, J. D. (1974) · Physical Review D · doi:10.1103/physrevd.9.3292 · Cited by 2,166
Microscopic origin of the Bekenstein-Hawking entropy
Strominger, A., & Vafa, C. (1996) · CERN Document Server (European Organization for Nuclear Research) · Cited by 2,109
Foundations of Quantum Group Theory
Majid, S. (1995) · Cambridge University Press eBooks · doi:10.1017/cbo9780511613104 · Cited by 1,954
Particle creation by black holes
Hawking, S. W. (1976) · Communications in Mathematical Physics · doi:10.1007/bf01608497 · Cited by 1,873
Research works printed but not linked: 11
- [9]9. Ashtekar, C. Beetle, O. Dreyer, S. Fairhurst, B. Krishnan, J. Lewandowski, and J. Wisniewski, Generic isolated horizons and their applications, Phys. Rev. Lett, (in press);
- [10]10. C. Beetle, Isolated horizons and black hole mechanics, Penn State Ph.D. Dissertation.
- [14]14. K. Krasnov, On statistical mechanics of Schwarzschild black holes, Gen. Rel. Grav., 30 (1998), 53-68.
- [18]18. A. Ashtekar and C.J. Isham, Representation of the holonomy al- gebras of gravity and non-Abelian gauge theories, Class. Quant. Grav., 9 (1992), 1433-1467.
- [19]19. A. Ashtekar and J. Lewandowski, Representation theory of analytic holonomy algebras, in 'Knots and Quantum Gravity', edited by J.C. Baez, Oxford U. Press, Oxford, 1994.
- [21]21. A. Ashtekar and J. Lewandowski, Projective techniques and func- tional integration, Jour. Math. Phys., 36 (1995), 2170-2191.
- [24]24. R. Penrose, Angular momentum: an approach to combinatorial space-time, in 'Quantum Theory and Beyond', edited by Ted Bastin, Cambridge University Press, 1971.
- [42]42. T. Thiemann, Quantum spin dynamics, Class. Quant. Grav., 15 (1998), 839-873.
- [45]45. I.E. Segal, The complex-wave representation of the free boson field, in 'Topics in Functional Analysis', edited by I. Gohberg and M. Kac, Adv. Math. Suppl. Studies, Vol. 3, Academic Press, New York, (1978), 321-343.
- [53]53. A. Ashtekar and M. Pierri, Probing quantum gravity through ex- actly soluble minisuperspaces, J. Math. Phys., 37 (1996), 6250- 6270;
- [79]79. O. Aharony, S. Gubser, J. Maldacena, H. Ooguri, and Y. Oz, Large N theories, string theory and gravity, Phys. Rep., 323 (2000), 183- 386.
Cited by
Sorted by citations
Items 501–558 of 558
LOOP GRAVITY: AN APPLICATION AND AN EXTENSION
Taveras, V. (2009) · PhDT
Boundary conditions for Black Holes using the Ashtekar Isolated and Dynamical Horizons formalism
Schirmer, J. (2010) · Texas ScholarWorks (Texas Digital Library)
Holst-like 2+1 Quantum Gravity with Toric Spatial FoliationPreprint
Basu, R. (2009) · arXiv (Cornell University) · doi:10.48550/arxiv.0902.0703
Extending the isolated horizon phase space to string-inspired gravity models
Liko, T. (2008) · Memorial University Research Repository (Memorial University) · doi:10.48550/arxiv.0812.3436
Quantum time uncertainty in Schwarzschild–anti-de Sitter black holes
Galán, P., Garay, L. J., & Marugán, G. A. M. (2007) · Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields · doi:10.1103/physrevd.76.044014
HOLOGRAPHIC BOUNDS ON HILBERT SPACE
Crowell, L. B. (2003) · International Journal of Modern Physics D · doi:10.1142/s021827180300416x
ENTANGLEMENT ENTROPY OF d-DIMENSIONAL BLACK HOLE AND QUANTUM ISOLATED HORIZON
Zhao, H.-H., Li, G.-L., Zhao, R., Ma, M.-S., & ZHANG, L.-C. (2013) · Modern Physics Letters A · doi:10.1142/s0217732313501290
Black Hole Entropy with and without Log Correction in Loop Quantum Gravity
Mitra, P. (2014) · Nuclear Physics B - Proceedings Supplements · doi:10.1016/j.nuclphysbps.2014.04.015
Semiclassical analysis of loop quantum gravity
Conrady, F. (2006) · edoc Publication server (Humboldt University of Berlin) · doi:10.18452/15549
Entanglement Entropy in Quantum Gravity
Donnelly, W. (2008) · UWSpace (University of Waterloo)
Entanglement Entropy of Reissner—Nordström Black Hole and Quantum Isolated Horizon
Ma, M.-S., Zhang, L.-C., & Zhao, R. (2014) · Communications in Theoretical Physics · doi:10.1088/0253-6102/62/3/11
Классический аналог квантовой черной дыры Шварцшильда. “Стандартная модель” и за ее пределами
Березин, В. А. (2012) · Теоретическая и математическая физика · doi:10.4213/tmf6747
Field dynamics on the trapping horizon in Vaidya spacetime
Majhi, A. (2017) · Physical review. D/Physical review. D. · doi:10.1103/physrevd.96.024013
Holographic bound in covariant loop quantum gravity
Tamaki, T. (2016) · Physical review. D/Physical review. D. · doi:10.1103/physrevd.94.024045
Proof of Bekenstein–Mukhanov ansatz in loop quantum gravity
Majhi, A. (2016) · Modern Physics Letters A · doi:10.1142/s0217732316501716
Some Numerical and Phenomenological Studies in Loop Quantum Cosmology
Gupt, B. (2014) · Louisiana State University · doi:10.31390/gradschool_dissertations.1075
Quantum dynamics of loop quantum gravity
Han, M. (2007) · Louisiana State University · doi:10.31390/gradschool_theses.3521
Chern Simons theory in the context of 2 1 and 3 1 quantum gravity
Basu, R. (2013) · University
Inflation in Quantum Loop Cosmology
Nelson, W. (2008) · From Quantum to Emergent Gravity: Theory and Phenomenology (QG-Ph) · doi:10.22323/1.043.0029
An Area Rescaling Ansatz and Black Hole Entropy from Loop Quantum Gravity
Majhi, A. (2019) · Advances in High Energy Physics · doi:10.1155/2019/6570896
Note on SU (2) isolated horizon
Majhi, A. (2020) · Classical and Quantum Gravity · doi:10.1088/1361-6382/ab7dd7
Spin foam quantization of 2D supergravity
Botman, D. M. (2009) · ANU Open Research (Australian National University) · doi:10.25911/5d514dd919fd4
Black hole entropy in loop quantum gravity: The role of internal symmetries
G., J. F. B. (2009) · Journal of Physics Conference Series · doi:10.1088/1742-6596/175/1/012005
Counting the Microstates at the Black Hole Horizon and the Immirzi Parameter of Loop Quantum Gravity
Sadiq, M. (2020) · Journal of Applied Mathematics and Physics · doi:10.4236/jamp.2020.810153
Quantum and classical areas of black hole thermodynamics
Ghosh, A., & Mitra, P. (2015) · Classical and Quantum Gravity · doi:10.1088/0264-9381/32/16/165006
Gravity, Geometry, and the Quantum
Sahlmann, H. (2014) · Springer eBooks · doi:10.1007/978-3-662-46035-1_37
Stability of quantum isolated horizon: a local observer's view
Majhi, A. (2013) · Classical and Quantum Gravity · doi:10.1088/0264-9381/30/5/055001
Bilson-Thompson, S. (2024) · Springer eBooks · doi:10.1007/978-3-031-43452-5_8
Investigating Fractal Holographic Principle in Quantum Gravity Using the McGinty Equation
(2024) · International Journal of Theoretical & Computational Physics · doi:10.47485/2767-3901.1052
Chronon Quantum Gravity: Emergent Spacetime from a Dynamical Temporal FieldPreprint
Li, B. (2025) · Preprints.org · doi:10.20944/preprints202505.1211.v1
Chronon Quantum Gravity: Emergent Spacetime from a Dynamical Temporal FieldPreprint
Li, B. (2025) · Preprints.org · doi:10.20944/preprints202505.1211.v2
Parametrized and relational systems
Kiefer, C. (2025) · Oxford University Press eBooks · doi:10.1093/oso/9780198842132.003.0003
Kiefer, C. (2025) · Oxford University Press eBooks · doi:10.1093/oso/9780198842132.003.0007
Kiefer, C. (2025) · Oxford University Press eBooks · doi:10.1093/oso/9780198842132.002.0004
Kiefer, C. (2025) · Oxford University Press eBooks · doi:10.1093/oso/9780198842132.005.0001
Kiefer, C. (2025) · Oxford University Press eBooks · doi:10.1093/oso/9780198842132.003.0001 · Cited by 1
Kiefer, C. (2025) · Oxford University Press eBooks · doi:10.1093/oso/9780198842132.002.0003
Quantum gravity with connections and loops
Kiefer, C. (2025) · Oxford University Press eBooks · doi:10.1093/oso/9780198842132.003.0006
Kiefer, C. (2025) · Oxford University Press eBooks · doi:10.1093/oso/9780198842132.003.0009
Kiefer, C. (2025) · Oxford University Press eBooks · doi:10.1093/oso/9780198842132.003.0005
Covariant approaches to quantum gravity
Kiefer, C. (2025) · Oxford University Press eBooks · doi:10.1093/oso/9780198842132.003.0002
Kiefer, C. (2025) · Oxford University Press eBooks · doi:10.1093/oso/9780198842132.003.0008
Kiefer, C. (2025) · Oxford University Press eBooks · doi:10.1093/oso/9780198842132.002.0005
Phenomenology, decoherence and the arrow of time
Kiefer, C. (2025) · Oxford University Press eBooks · doi:10.1093/oso/9780198842132.003.0010
Black hole microstates and entropy
Singh, S. K. (2025) · Kinematika i Fizika Nebesnykh Tel · doi:10.15407/kfnt2025.04.044
Planckian Discreteness and the Resolution of the BH Information Puzzle
Pérez, A., & Viollet, S. (2025) · Springer Series in Astrophysics and Cosmology · doi:10.1007/978-981-96-6170-1_14
Sobre la descripción de agujeros negros en gravedad cuántica
Hernández, H. H. H. (2004) · doi:10.24275/uami.n296wz95c
Can gravitational-wave data shed light on dark matter particles?
Majumdar, P. (2025) · Physical review. D/Physical review. D. · doi:10.1103/z3lk-kmys
Miranda, A. P. M. T. (2025) · SSRN Electronic Journal · doi:10.2139/ssrn.5347443
TQFT and Loop Quantum Gravity : 2+1 Theory and Black Hole Entropy
Pranzetti, D. (2011) · theses.fr (ABES) · doi:10.70675/51f92df4zd74bz44c9z95eazf924851241ec
Loop Quantum Gravity and Discrete Geometry
Zhang, M. (2014) · theses.fr (ABES) · doi:10.70675/026f7da8z9bd6z462bz92f1z74b088afa84d
Aspects de gravitation quantique
Liu, H. (2019) · theses.fr (ABES) · doi:10.70675/914be533zcf19z4b75z8627z3d22268906b7
Quelques aspects de physique des trous noirs, cosmologie et théorie quantique des champs
Moulin, F. (2020) · theses.fr (ABES) · doi:10.70675/10cd5595z7a1cz463fz9ab5z259ba4a2bd58
Fractal horizons beyond roughness: Auto-affine and multifractal black hole geometry
Giné, J. (2026) · Physics Letters B · doi:10.1016/j.physletb.2026.140492
Beckwith, A. W. (2026) · Journal of High Energy Physics Gravitation and Cosmology · doi:10.4236/jhepgc.2026.123082
Anonymous, & Zhang, C. (2026) · Physical review. D/Physical review. D. · doi:10.1103/wl57-t1lv
Metadata
- Authors
- Ashtekar, A., Baez, J. C., & Krasnov, K.
- Affiliations
- Pennsylvania State University (US)
- University of California, Riverside (US)
- Venue
- Advances in Theoretical and Mathematical Physics
- Publisher
- International Press of Boston
- Published
- 2000
- Volume
- 4
- Issue
- 1
- Pages
- 1-94
- ISSN
- 1095-0753 (ISSN-L)
- 1095-0761
- OpenAlex
- W2150054850
- Semantic Scholar
- 0aadaa53f13c4b760fd2b2cc502e438445037ac3
- Cited by
- 580
- References
- 70
- Citations by year
- 2026: 9 · 2025: 29 · 2024: 11 · 2023: 8 · 2022: 7 · 2021: 16 · 2020: 8 · 2019: 11 · 2018: 20 · 2017: 23 · 2016: 26 · 2015: 22 · 2014: 32 · 2013: 23 · 2012: 23
- FWCI
- 16.46
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- Advances in Theoretical and Mathematical Physics (publishedVersion)
- arXiv (Cornell University) (submittedVersion)
- CERN Document Server (European Organization for Nuclear Research) (submittedVersion)
- arXiv (Cornell University)
- Funders
- National Science Foundation (9722514, 9407194, 9514240)
- University of Pennsylvania
- Pennsylvania State University
- Topics
- Physical Sciences › Physics and Astronomy › Nuclear and High Energy Physics › Black Holes and Theoretical Physics
- Physical Sciences › Physics and Astronomy › Nuclear and High Energy Physics › Noncommutative and Quantum Gravity Theories
- Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Relativity and Gravitational Theory
- Keywords
- isolated horizons, black hole entropy, quantum geometry, Chern-Simons theory, polymer quantization, non-rotating black holes, deficit angle, cosmological horizon, non-perturbative quantization
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
Are you an author, or do you see a problem with this page? Request a review