Results 71 to 80 of about 268,972 (205)
Quantum fluctuations from thermal fluctuations in Jacobson formalism
European Physical Journal C: Particles and Fields, 2017 In the Jacobson formalism general relativity is obtained from thermodynamics. This is done by using the Bekenstein–Hawking entropy–area relation. However, as a black hole gets smaller, its temperature will increase.
Mir Faizal +5 more
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Aspects of Semiclassical Black Holes: Development and Open Problems
Advances in High Energy Physics, 2021 The current work is a review, dedicated to the study of semiclassical aspects of black holes. We begin by briefly looking at the main statements of general relativity.
Alexander Y. Yosifov
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A fundamental problem in quantizing general relativity
, 2018 We point out a fundamental problem that hinders the quantization of general relativity: quantum mechanics is formulated in terms of systems, typically limited in space but infinitely extended in time, while general relativity is formulated in terms of ...
Maccone, Lorenzo
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Hidden quantum group structure in Einstein's general relativity [PDF]
Nuclear Physics B, 1998 A new formal scheme is presented in which Einstein's classical theory of General Relativity appears as the common, invariant sector of a one-parameter family of different theories. This is achieved by replacing the Poincare` group of the ordinary tetrad formalism with a q-deformed Poincare` group, the usual theory being recovered at q=1.
BIMONTE, GIUSEPPE ROBERTO +3 more
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Perturbative Quantum Gravity and its Relation to Gauge Theory
Living Reviews in Relativity, 2002 In this review we describe a non-trivial relationship between perturbative gauge theory and gravity scattering amplitudes. At the semi-classical or tree-level, the scattering amplitudes of gravity theories in flat space can be expressed as a sum of ...
Bern Zvi
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CLASSICAL AND QUANTUM GENERAL RELATIVITY: A NEW PARADIGM [PDF]
International Journal of Modern Physics D, 2005 We argue that recent developments in discretizations of classical and quantum gravity imply a new paradigm for doing research in these areas. The paradigm consists in discretizing the theory in such a way that the resulting discrete theory has no constraints. This solves many of the hard conceptual problems of quantum gravity.
Gambini, Rodolfo, Pullin, Jorge
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Discrete Approaches to Quantum Gravity in Four Dimensions
Living Reviews in Relativity, 1998 The construction of a consistent theory of quantum gravity is a problem in theoretical physics that has so far defied all attempts at resolution. One ansatz to try to obtain a non-trivial quantum theory proceeds via a discretization of space-time and the
Loll Renate
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Quantum Black Holes and (Re)Solution of the Singularity
Universe, 2021 Classical general relativity predicts the occurrence of spacetime singularities under very general conditions. Starting from the idea that the spacetime geometry must be described by suitable states in the complete quantum theory of matter and gravity ...
Roberto Casadio
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The Thermodynamics of Black Holes
Living Reviews in Relativity, 2001 We review the present status of black hole thermodynamics. Our review includes discussion of classical black hole thermodynamics, Hawking radiation from black holes, the generalized second law, and the issue of entropy bounds.
Wald Robert M.
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Universe, 2020 Quantum field theory and Einstein’s theory of general relativity are extremely successful in predicting the outcome of particle physics and gravitational experiments [...]
Astrid Eichhorn +2 more
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