Mathematical structure of loop quantum cosmology
Open accessAbstract
Applications of Riemannian quantum geometry to cosmology have had notable successes.In particular, the fundamental discreteness underlying quantum geometry has led to a natural resolution of the big bang singularity.However, the precise mathematical structure underlying loop quantum cosmology and the sense in which it implements the full quantization program in a symmetry reduced model has not been made explicit.The purpose of this paper is to address these issues, thereby providing a rmer mathematical and conceptual foundation to the subject.
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Cites
Kiefer, C. (2004) · Cited by 2,981 · see citing works
Background independent quantum gravity: a status report
Ashtekar, A., & Lewandowski, J. (2004) · Classical and Quantum Gravity · doi:10.1088/0264-9381/21/15/r01 · Cited by 1,951 · see citing works
Self-citationNew Variables for Classical and Quantum Gravity
Ashtekar, A. (1986) · Physical Review Letters · doi:10.1103/physrevlett.57.2244 · Cited by 1,663 · see citing works
Self-citationDiscreteness of area and volume in quantum gravity
Rovelli, C., & Smolin, L. (1995) · Nuclear Physics B · doi:10.1016/0550-3213(95)00150-q · Cited by 1,365 · cited 1× · see citing works
“In quantum geometry, on the other hand, the area operator (of an open surface) has a lowest eigenvalue ao = ( √ 3γ)/4 l(2)Pl [17,30] suggesting that it is physically inappropriate to try to localize Fab on arbitrarily small surfaces.”
BackgroundNew Hamiltonian formulation of general relativity
Ashtekar, A. (1987) · Physical Review D · doi:10.1103/physrevd.36.1587 · Cited by 1,119 · see citing works
Self-citationQuantum geometry and black hole entropy
Ashtekar, A., Baez, J., Corichi, A., & Krasnov, K. (1998) · Physical Review Letters · doi:10.1103/physrevlett.80.904 · Cited by 1,105 · see citing works
Self-citationQuantum theory of geometry: I. Area operators
Ashtekar, A., & Lewandowski, J. (1997) · Classical and Quantum Gravity · doi:10.1088/0264-9381/14/1a/006 · Cited by 852 · see citing works
Self-citationAbsence of a Singularity in Loop Quantum Cosmology
Bojowald, M. (2001) · Physical Review Letters · doi:10.1103/physrevlett.86.5227 · Cited by 769 · see citing works
Spin networks and quantum gravity
Rovelli, C., & Smolin, L. (1995) · Physical Review D · doi:10.1103/physrevd.52.5743 · Cited by 629 · see citing works
Quantum geometry of isolated horizons and black hole entropy
Ashtekar, A., Baez, J. C., & Krasnov, K. (2000) · Advances in Theoretical and Mathematical Physics · doi:10.4310/atmp.2000.v4.n1.a1 · Cited by 580 · see citing works
Self-citationQuantization of diffeomorphism invariant theories of connections with local degrees of freedom
Ashtekar, A., Lewandowski, J., Marolf, D., Mourão, J., & Thiemann, T. (1995) · Journal of Mathematical Physics · doi:10.1063/1.531252 · Cited by 528 · see citing works
Self-citation(1995) · CERN Document Server (European Organization for Nuclear Research) · Cited by 412 · see citing works
Projective techniques and functional integration for gauge theories
Ashtekar, A., & Lewandowski, J. (1995) · Journal of Mathematical Physics · doi:10.1063/1.531037 · Cited by 388 · see citing works
Self-citationQuantum gravity, shadow states and quantum mechanics
Ashtekar, A., Fairhurst, S., & Willis, J. L. (2003) · Classical and Quantum Gravity · doi:10.1088/0264-9381/20/6/302 · Cited by 313 · see citing works
Self-citationRepresentations of the holonomy algebras of gravity and nonAbelian gauge theories
Ashtekar, A., & Isham, C. J. (1992) · Classical and Quantum Gravity · doi:10.1088/0264-9381/9/6/004 · Cited by 310 · see citing works
Self-citationDifferential geometry on the space of connections via graphs and projective limits
Ashtekar, A., & Lewandowski, J. (1995) · Journal of Geometry and Physics · doi:10.1016/0393-0440(95)00028-g · Cited by 303 · see citing works
Self-citationAnomaly-free formulation of non-perturbative, four-dimensional Lorentzian quantum gravity
Thiemann, T. (1996) · Physics Letters B · doi:10.1016/0370-2693(96)00532-1 · Cited by 284 · see citing works
Isotropic loop quantum cosmology
Martin Bojowald, A. (2002) · Classical and Quantum Gravity · doi:10.1088/0264-9381/19/10/313 · Cited by 239 · see citing works
Anomaly-free formulation of non-perturbative, four-dimensional Lorentzian quantum gravity
Thiemann, T. (1996) · Cited by 228 · see citing works
Inflation from Quantum Geometry
Martin Bojowald, A. (2002) · Physical Review Letters · doi:10.1103/physrevlett.89.261301 · Cited by 201 · see citing works
Inverse scale factor in isotropic quantum geometry
Martin Bojowald, A. (2001) · Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields · doi:10.1103/physrevd.64.084018 · Cited by 177 · see citing works
Symmetry reduction for quantized diffeomorphism-invariant theories of connections
Bojowald, M., & Kastrup, H. A. (2000) · Classical and Quantum Gravity · doi:10.1088/0264-9381/17/15/311 · Cited by 168 · see citing works
Homogeneous loop quantum cosmology
Martin Bojowald, A. (2003) · Classical and Quantum Gravity · doi:10.1088/0264-9381/20/13/310 · Cited by 165 · see citing works
Thiemann, T. (1998) · Classical and Quantum Gravity · doi:10.1088/0264-9381/15/5/010 · Cited by 158 · see citing works
Generalized measures in gauge theory
Baez, J. C. (1994) · Letters in Mathematical Physics · doi:10.1007/bf00761713 · Cited by 139 · see citing works
On the support of the Ashtekar-Lewandowski measure
Marolf, D., & Mourão, J. M. (1995) · Communications in Mathematical Physics · doi:10.1007/bf02099150 · Cited by 136 · see citing works
Quantization ambiguities in isotropic quantum geometry
Martin Bojowald, A. (2002) · Classical and Quantum Gravity · doi:10.1088/0264-9381/19/20/306 · Cited by 135 · see citing works
Loop quantum cosmology: I. Kinematics
Bojowald, M. (2000) · Classical and Quantum Gravity · doi:10.1088/0264-9381/17/6/312 · Cited by 125 · see citing works
The semiclassical limit of loop quantum cosmology
Martin Bojowald, A. (2001) · Classical and Quantum Gravity · doi:10.1088/0264-9381/18/18/101 · Cited by 116 · see citing works
Dynamical Initial Conditions in Quantum Cosmology
Martin Bojowald, A. (2001) · Physical Review Letters · doi:10.1103/physrevlett.87.121301 · Cited by 115 · see citing works
Loop quantum cosmology: IV. Discrete time evolution
Martin Bojowald, A. (2001) · Classical and Quantum Gravity · doi:10.1088/0264-9381/18/6/308 · Cited by 115 · see citing works
Homogeneous loop quantum cosmology: the role of the spin connection
Martin Bojowald, A., Date, G., & Vandersloot, K. (2004) · Classical and Quantum Gravity · doi:10.1088/0264-9381/21/4/034 · Cited by 110 · see citing works
The complete spectrum of the area from recoupling theory in loop quantum gravity
Frittelli, S., Lehner, L., & Rovelli, C. (1996) · Classical and Quantum Gravity · doi:10.1088/0264-9381/13/11/008 · Cited by 95 · see citing works
Refined Algebraic Quantization: Systems with a single constraint
Marolf, D. M. (1997) · Banach Center Publications · doi:10.4064/-39-1-331-344 · Cited by 87 · see citing works
The complete spectrum of the area from recoupling theory in loop quantum gravity
Frittelli, S., Lehner, L., & Carlo Rovelli, C. (1996) · CERN Document Server (European Organization for Nuclear Research) · Cited by 82 · see citing works
Polymer and Fock representations for a Scalar fieldPreprint
Ashtekar, A., Lewandowski, J., & Sahlmann, H. (2002) · Cited by 80 · see citing works
Self-citationDiffeomorphism covariant representations of the holonomy-flux -algebra
Oko w, A., & Lewandowski, J. (2003) · Classical and Quantum Gravity · doi:10.1088/0264-9381/20/16/302 · Cited by 58 · see citing works
Self-citationRefined Algebraic Quantization: Systems with a single constraintPreprint
Marolf, D. M. (1995) · arXiv (Cornell University) · doi:10.48550/arxiv.gr-qc/9508015 · Cited by 52 · see citing works
On the superselection theory of the Weyl algebra for diffeomorphism invariant quantum gauge theoriesPreprint
Sahlmann, H., & Thiemann, T. (2003) · arXiv (Cornell University) · doi:10.48550/arxiv.gr-qc/0302090 · Cited by 51 · see citing works
Gaul, M., & Carlo Rovelli, C. (2000) · Cited by 48 · see citing works
Some Comments on the Representation Theory of the Algebra Underlying Loop Quantum Gravity
Sahlmann, H. (2002) · Max Planck Digital Library · Cited by 45 · see citing works
Discrete quantum gravity: cosmological examples
Gambini, R., & Pullin, J. A. (2003) · Classical and Quantum Gravity · doi:10.1088/0264-9381/20/15/305 · Cited by 27 · see citing works
Wagh, S. M., Saraykar, R. V., Muktibodh, P. S., et al. (2001) · arXiv (Cornell University) · doi:10.48550/arxiv.gr-qc/0112033 · Cited by 2 · see citing works
Flagged first, then by citations
Research works printed but not linked: 10
- [3]3. M. Bojowald, Absence o f singularity in loop quantum cosmology, Phys. Rev. Lett., 86 (2001), 5227{5230.
- [5]5. M. Bojowald, Ination from quantum geometry, Phys. Rev. Lett., 89 (2002), 261301.
- [9]9. A. Ashtekar and J. Lewandowski, Representation theory of analytic holonomy algebras, in `Knots and Quantum Gravity', edired by J.C. Baez, Oxford U. Press, Oxford 1994.
- [12]12. A. Ashtekar and J. Lewandowski, Projective techniques and functional integration, Jour. Math. Phys., 36 (1995), 2170-2191.
- [13]13. A. Ashtekar and J. Lewandowski, Dierential geometry on the space of connections using projective techniques, Jour. Geo. & Phys., 17 (1995), 191{230.
- [15]15. QSD V : Quantum gravity as the natural regulator of matter quantum eld theories, Class. Quant. Grav., 15 (1998), 1281{1314.
- [21]21. J. Lewandowski and A. Okolow, Dieomorphism covariant representa- tions of the holonomy-ux star-algebra, gr-qc/0302059. · arXiv
- [25]25. J. C. Baez, Spin networks in non-perturbative quantum gravity, i n T h e Interface of Knots and Physics', edited by Kauman, L. (American Mathematical Society, P r o vidence, 1996) pp. 167{203 Spin networks in gauge theory, Adv. Math. 117 (1996), 253{272.
- [38]38. A. Ashtekar, J. Lewandowski and H. Sahlmann, Polymer and Fock rep- resentations for a Scalar eld, Class. Quantum Grav. 20 (2003), L1{11.
- [40]40. A. Erd+ elyi, Asymptotic expansions, Chapter II (Dover, New York, 1956).
Cited by
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Vandersloot, K. (2005) · Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields · doi:10.1103/physrevd.71.103506 · Cited by 120 · see citing works
Effective quantum extended spacetime of polymer Schwarzschild black hole
Bodendorfer, N., Mele, F. M., & Münch, J. (2019) · Classical and Quantum Gravity · doi:10.1088/1361-6382/ab3f16 · Cited by 119 · see citing works
Future singularities and teleparallelism in loop quantum cosmology
Bamba, K., de Haro, J., & Odintsov, S. D. (2013) · Journal of Cosmology and Astroparticle Physics · doi:10.1088/1475-7516/2013/02/008 · Cited by 118 · see citing works
Loop quantization of vacuum Bianchi I cosmology
Martín-Benito, M., Marugán, G. A. M., & Pawłowski, T. (2008) · Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields · doi:10.1103/physrevd.78.064008 · Cited by 114 · see citing works
Singularity resolution in loop quantum cosmology: A brief overview
Ashtekar, A. (2009) · Journal of Physics Conference Series · doi:10.1088/1742-6596/189/1/012003 · Cited by 113 · see citing works
Self-citationLight rings and shadows of static black holes in effective quantum gravity
Liu, W., Wu, D., & Wang, J. (2024) · Physics Letters B · doi:10.1016/j.physletb.2024.139052 · Cited by 111 · see citing works
Homogeneous loop quantum cosmology: the role of the spin connection
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Semiclassical states, effective dynamics, and classical emergence in loop quantum cosmology
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Towards cosmological dynamics from loop quantum gravity
Li, B.-F., Singh, P., & Wang, A. (2018) · Physical review. D/Physical review. D. · doi:10.1103/physrevd.97.084029 · Cited by 108 · see citing works
Quantum Bounce and Cosmic Recall
Corichi, A., & Singh, P. (2008) · Physical Review Letters · doi:10.1103/physrevlett.100.161302 · Cited by 107 · see citing works
Physical evolution in loop quantum cosmology: The example of the vacuum Bianchi I model
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Lattice refining loop quantum cosmology, anisotropic models, and stability
Martin Bojowald, A., Cartin, D., & Khanna, G. (2007) · Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields · doi:10.1103/physrevd.76.064018 · Cited by 107 · see citing works
Anomaly-free cosmological perturbations in effective canonical quantum gravity
Barrau, A., Bojowald, M., Calcagni, G., Grain, J., & Kagan, M. (2015) · Journal of Cosmology and Astroparticle Physics · doi:10.1088/1475-7516/2015/05/051 · Cited by 106 · see citing works
Self-citationDiener, P., Gupt, B., & Singh, P. (2014) · Classical and Quantum Gravity · doi:10.1088/0264-9381/31/10/105015 · Cited by 105 · see citing works
Bouhmadi-López, M., Brahma, S., Chen, C.-Y., Chen, P., & Yeom, D.-H. (2020) · Journal of Cosmology and Astroparticle Physics · doi:10.1088/1475-7516/2020/07/066 · Cited by 105 · see citing works
Shadow and stability of quantum-corrected black holes
Yang, J., Zhang, C., & Ma, Y. (2023) · The European Physical Journal C · doi:10.1140/epjc/s10052-023-11800-8 · Cited by 105 · see citing works
Spherically symmetric loop quantum gravity: analysis of improved dynamics
Gambini, R., Olmedo, J., & Pullin, J. A. (2020) · Classical and Quantum Gravity · doi:10.1088/1361-6382/aba842 · Cited by 103 · see citing works
EFFECTIVE CONSTRAINTS FOR QUANTUM SYSTEMS
BOJOWALD, M., SANDHÖFER, B., SKIRZEWSKI, A., & Tsobanjan, A. (2009) · Reviews in Mathematical Physics · doi:10.1142/s0129055x09003591 · Cited by 103 · see citing works
Self-citationLoop quantum cosmology in Bianchi type I models: Analytical investigation
Chiou, D.-W. (2007) · Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields · doi:10.1103/physrevd.75.024029 · Cited by 102 · see citing works
Self-dual black holes in loop quantum gravity: Theory and phenomenology
Modesto, L., & Prémont-Schwarz, I. (2009) · Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields · doi:10.1103/physrevd.80.064041 · Cited by 102 · see citing works
Further improvements in the understanding of isotropic loop quantum cosmology
Martín-Benito, M., Marugán, G. A. M., & Olmedo, J. (2009) · Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields · doi:10.1103/physrevd.80.104015 · Cited by 101 · see citing works
Spherically Symmetric Quantum Geometry: Hamiltonian ConstraintPreprint
Martin Bojowald, A., & Swiderski, R. (2005) · Cited by 100 · see citing works
Positive cosmological constant in loop quantum cosmology
Pawłowski, T., & Ashtekar, A. (2012) · Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields · doi:10.1103/physrevd.85.064001 · Cited by 99 · see citing works
Self-citationLoop quantum cosmology, boundary proposals, and inflation
Martin Bojowald, A., & Vandersloot, K. (2003) · Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields · doi:10.1103/physrevd.67.124023 · Cited by 99 · see citing works
QUANTUM GRAVITY AND HIGHER CURVATURE ACTIONS
Martin Bojowald, A., & Skirzewski, A. (2007) · International Journal of Geometric Methods in Modern Physics · doi:10.1142/s0219887807001941 · Cited by 98 · see citing works
Black Hole Interior from Loop Quantum Gravity
Modesto, L. (2008) · Advances in High Energy Physics · doi:10.1155/2008/459290 · Cited by 98 · see citing works
Consistent Loop Quantum CosmologyPreprint
Martin Bojowald, A. (2008) · Cited by 98 · see citing works
Observational issues in loop quantum cosmology
Barrau, A., Cailleteau, T., Grain, J., & B, J. M. A. (2014) · Classical and Quantum Gravity · doi:10.1088/0264-9381/31/5/053001 · Cited by 96 · see citing works
Loop quantization of spherically symmetric midi-superspaces
Campiglia, M., Gambini, R., & Pullin, J. A. (2007) · Classical and Quantum Gravity · doi:10.1088/0264-9381/24/14/007 · Cited by 96 · see citing works
Quantum cosmology with a big-brake singularity
Kamenshchik, A. Y., Kiefer, C., & Sandhöfer, B. (2007) · Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields · doi:10.1103/physrevd.76.064032 · Cited by 95 · see citing works
Genericness of a Big Bounce in Isotropic Loop Quantum Cosmology
Date, G., & Hossain, G. M. (2005) · Physical Review Letters · doi:10.1103/physrevlett.94.011302 · Cited by 95 · see citing works
Dynamics of an interacting dark energy model in Einstein and loop quantum cosmology
Chen, S., Wang, B., & Jing, J. (2008) · Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields · doi:10.1103/physrevd.78.123503 · Cited by 95 · see citing works
Stepping out of homogeneity in loop quantum cosmology
Carlo Rovelli, C., & Vidotto, F. (2008) · Classical and Quantum Gravity · doi:10.1088/0264-9381/25/22/225024 · Cited by 95 · see citing works
- Authors
- Ashtekar, A., Bojowald, M., & Lewandowski, J.
- Affiliations
- Pennsylvania State University (US)
- Venue
- Advances in Theoretical and Mathematical Physics
- Publisher
- International Press of Boston
- Published
- 2003
- Volume
- 7
- Issue
- 2
- Pages
- 233-268
- ISSN
- 1095-0753 (ISSN-L)
- 1095-0761
- OpenAlex
- W2101065856
- Cited by
- 762
- References
- 38
- Citations by year
- 2026: 14 · 2025: 30 · 2024: 24 · 2023: 26 · 2022: 21 · 2021: 37 · 2020: 35 · 2019: 34 · 2018: 27 · 2017: 21 · 2016: 36 · 2015: 31 · 2014: 31 · 2013: 44 · 2012: 48
- FWCI
- 25.23
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- Advances in Theoretical and Mathematical Physics (publishedVersion)
- Funders
- National Science Foundation (0090091)
- University of Pennsylvania
- Pennsylvania State University
- Topics
- Physical Sciences › Physics and Astronomy › Statistical and Nonlinear Physics › Noncommutative and Quantum Gravity Theories
- Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Cosmology and Gravitation Theories
- Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Relativity and Gravitational Theory
- Keywords
- loop quantum cosmology, Big Bang singularity resolution, discrete spacetime, mathematical structures
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.
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