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One of the celebrated results of Loop Quantum Gravity (LQG) is the discreteness of the spectrum of geometrical operators such as length, area and volume operators.
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2006
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A. Ashtekar, “An Introduction to Loop Quantum Gravity Through Cosmology,” arXiv:gr-qc/0702030. A. Ashtekar and J. Lewandowski, “Background independent quantum gravity: A status report,” Class. Quant. Grav. 21
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2007
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B. Dittrich, “Partial and complete observables for Hamiltonian constrained systems,” to appear in Gen. Rel. Grav. [arXiv:gr-qc/0411013]. B. Dittrich, “Partial and Complete Observables for Canonical General Relativity,” Class. Quant. Grav. 23
2007
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