Unified Theory Of Gravity and Electromagnetism : Classical and Quantum Aspects
SSRN Electronic Journal, 2021 A unified classical theory of gravity and electromagnetism with a torsion vector 0, proposed by S N Bose in 1952, is introduced. In this theory, the torsion vector acts as a magnetic current and it is shown that (i) the electromagnetism is invariant under continuous Heaviside–Larmor transformations and (ii) the electric and magnetic charges are ...
Avik
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Large Quantum Gravity Effects: Unforeseen Limitations of the Classical Theory [PDF]
Physical Review Letters, 1996 3-dimensional gravity coupled to Maxwell (or Klein-Gordon) fields is exactly soluble under the assumption of axi-symmetry. The solution is used to probe several quantum gravity issues. In particular, it is shown that the quantum fluctuations in the geometry are large unless the number and frequency of photons satisfy the inequality $\N(\hbar G )^2 <
Abhay Ashtekar
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Hamilton–Jacobi Wave Theory in Manifestly-Covariant Classical and Quantum Gravity [PDF]
The European Physical Journal C, 2019 A challenging issue in General Relativity concerns the determination of the manifestly-covariant continuum Hamiltonian structure underlying the Einstein field equations and the related formulation of the corresponding covariant Hamilton-Jacobi theory. The task is achieved by adopting a synchronous variational principle requiring distinction between the
Claudio Cremaschini, Massimo Tessarotto
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Vector Theory of Gravity: quantum and classical effects, renormalization [PDF]
, 2011 16 pages, 4 ...
В. Н. Бородихин
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Classical Solution of Field Equation of Gravitational Gauge Field and Classical Tests of Gauge Theory of Gravity [PDF]
, 2005 33 pages, no ...
Ning Wu, Dahua Zhang
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A Classical Field Theory of Gravity and Electromagnetism
Journal of Modern Physics, 2014 A classical field theory of gravity and electromagnetism is developed. The starting point of the theory is the Maxwell equations which are directly tied to the Riemann-Christoffel curvature tensor. This is done through the derivatives of the Maxwell tensor which are equated to a vector field contracted with the ...
Raymond J. Beach
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Classical gauge theory of gravity [PDF]
Theoretical and Mathematical Physics, 2002 The classical theory of gravity is formulated as a gauge theory on a frame bundle with spontaneous symmetry breaking caused by the existence of Dirac fermionic fields. The pseudo-Riemannian metric (tetrad field) is the corresponding Higgs field. We consider two variants of this theory.
G. Sardanashvily
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A postquantum theory of classical gravity? [PDF]
Physical Review X, 2018 The effort to discover a quantum theory of gravity is motivated by the need to reconcile the incompatibility between quantum theory and general relativity. Here, we present an alternative approach by constructing a consistent theory of classical gravity coupled to quantum field theory.
Jonathan Oppenheim
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Constraints on Black Holes in Classical and Semiclassical Theories of Gravity [PDF]
, 1997 7 pages ...
Paul R. Anderson, Courtney D. Mull
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Horizon-scale tests of gravity theories and fundamental physics from the Event Horizon Telescope image of Sagittarius A ∗ [PDF]
Classical and quantum gravity, 2022 Horizon-scale images of black holes (BHs) and their shadows have opened an unprecedented window onto tests of gravity and fundamental physics in the strong-field regime.
S. Vagnozzi +3 more
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