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   Quantum gravity

   Quantum gravity (QG) is the field of theoretical physics attempting to unify quantum mechanics with general relativity in a self-consistent manner, or more precisely, to formulate a self-consistent theory which reduces to ordinary quantum mechanics in the limit of weak gravity (potentials much less than c2) and which reduces to Einsteinian general relativity in the limit of large actions (action much larger than reduced Planck's constant). ... Claus Kiefer Does time exist in quantum gravity?
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   Loop quantum gravity

   Loop quantum gravity (LQG), also known as loop gravity and quantum geometry, is a proposed quantum theory of spacetime which attempts to reconcile the theories of quantum mechanics and general relativity. ... Carlo Rovelli and Lee Smolin, Discreteness of area and volume in quantum gravity, Nucl. Phys., B442 (1995) 593-622, e-print available as gr-qc/9411005
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   General relativity

   General relativity or the general theory of relativity is the geometric theory of gravitation published by Albert Einstein in 1915. ... Isham, Christopher J. (1994), [Expression error: Missing operand for > "Prima facie questions in quantum gravity"], in Ehlers, Jürgen; Friedrich, Helmut, Canonical Gravity: From Classical to Quantum, Springer, ISBN 3-540-58339-4
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   Introduction to general relativity

   General relativity (GR) is a theory of gravitation that was developed by Albert Einstein between 1907 and 1915. ... | Kaluza–Klein Quantum gravity |
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   History of general relativity

   As Albert Einstein later said, the reason for the development of general relativity was that the preference of inertial motions within special relativity was unsatisfactory, while a theory which from the outset prefers no state of motion (even accelerated ones) should appear more satisfactory. ... | Kaluza–Klein Quantum gravity |
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   Special relativity

   At very small scales, such as at the Planck length and below, quantum effects must be taken into consideration resulting in quantum gravity. ... General Relativity From A to B. University of Chicago Press.
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   Yilmaz theory of gravitation

   The Yilmaz theory of gravitation is an attempt by Huseyin Yilmaz (Turkish: Hüseyin Yılmaz) and a handful of coworkers to formulate a classical field theory of gravitation which closely mimics general relativity in weak-field conditions, but in which event horizons cannot appear. ... ↑ Michael Ibison, Cosmological test of the Yilmaz theory of gravity, Class. quantum gravity 2006, vol. 23, no3, pp. 577-589
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   f(R) gravity

   f(R) gravity is a type of modified gravity theory proposed as an alternative to Einstein's General Relativity. ... ... theory Newtonian gravity (NG) Classical mechanics General relativity (GR) History... Conformal gravity f(R) gravity Scalar theories... Geometrodynamics Quantum gravity Semiclassical gravity Causal dynamical... QG Induced gravity Causal sets... eqn Loop quantum gravity Theory of... Composite gravity Massive gravity Fringe science...
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   ADM formalism

   The ADM Formalism developed by Arnowitt, Deser and Misner is a Hamiltonian formulation of general relativity. This formulation plays an important role both in quantum gravity and numerical relativity.
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    Immirzi parameter

    In 1997, Ashtekar, Baez, Corichi and Krasnov quantized the classical phase space of the exterior of a black hole in vacuum General Relativity. ... Another more recent interpretation is that it is the measure of the value of parity violation in quantum gravity, and its positive real value is necessary for the Kodama state of loop quantum gravity.

Explore the following pages on Powerset:

• Quantum gravity,
• Loop quantum gravity,
• General relativity,
• Introduction to general relativity,
• History of general relativity,
• Special relativity,
• Yilmaz theory of gravitation,
• f(R) gravity,
• ADM formalism,
• Immirzi parameter

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