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Metric of Rotating Charged Spherical Mass in Vacuum for Vector Graviton Metric Theory of Gravitation
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作者 QIAN Shang-Wu ZHONG Zai-Zhe GU Zhi-Yu 《Communications in Theoretical Physics》 SCIE CAS CSCD 2005年第5X期855-857,共3页
Based on the vector graviton metric theory of gravitation (VGM) suggested by one of the authors of this article, using the method of null tetrad and analytic continuation, this paper gives the metric of the rotating c... Based on the vector graviton metric theory of gravitation (VGM) suggested by one of the authors of this article, using the method of null tetrad and analytic continuation, this paper gives the metric of the rotating charged spherical mass in VGM. The result shows once again that a replacement of G by G* = G(1 - G M /2r) in general relativity will yield the corresponding result in VGM for the metric in vacuum. 展开更多
关键词 metric theory of gravitation vector graviton field TETRAD Kerr-Newman metric
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A Possible Interpretation on Distance-Dependent Effect of Gravitational Constant in Newton's Theory of Gravitation
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作者 QIANShang-Wu 《Communications in Theoretical Physics》 SCIE CAS CSCD 2005年第6期1045-1046,共2页
Based on the new metric theory of gravitation suggested by the author of this article, it gives a possible theoretical interpretation on the famous experiment done by D.R. Long in 1976, i.e. the distance-dependent eff... Based on the new metric theory of gravitation suggested by the author of this article, it gives a possible theoretical interpretation on the famous experiment done by D.R. Long in 1976, i.e. the distance-dependent effect of the gravitational constant in Newton's theory of gravitation. 展开更多
关键词 general relativity metric theory of gravitation vector graviton field
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A note on teleparallel Killing vector fields in Bianchi type Ⅷ and Ⅸ space-times in teleparallel theory of gravitation
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作者 Ghulam Shabbir Amjad Ali Suhail Khan 《Chinese Physics B》 SCIE EI CAS CSCD 2011年第7期88-93,共6页
In this paper we classify Bianchi type Ⅷ and IX space-times according to their teleparallel Killing vector fields in the teleparallel theory of gravitation by using a direct integration technique. It turns out that t... In this paper we classify Bianchi type Ⅷ and IX space-times according to their teleparallel Killing vector fields in the teleparallel theory of gravitation by using a direct integration technique. It turns out that the dimensions of the teleparallel Killing vector fields are either 4 or 5. From the above study we have shown that the Killing vector fields for Bianchi type Ⅷ and Ⅸ space-times in the context of teleparallel theory are different from that in general relativity. 展开更多
关键词 WeitzenbSck geometry teleparallel theory of gravitation conservation laws
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A NON-DUALISTIC UNIFIED FIELD THEORY OF GRAVITATION,ELECTROMAGNETISM AND SPIN
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作者 余燊 《Applied Mathematics and Mechanics(English Edition)》 SCIE EI 1990年第2期99-115,共17页
The wisdom of classicalunified field theories in the conceptual framework of Weyl, Eddington, Einstein and Schrodinger has often been doubted and in particular there does not appear to be any empirical reason why the ... The wisdom of classicalunified field theories in the conceptual framework of Weyl, Eddington, Einstein and Schrodinger has often been doubted and in particular there does not appear to be any empirical reason why the Einstein-Maxwell (E-MJ theory needs to be geometrized. The crux of the matter is, however not whether the E-M theory is aesthetically satisfactory but whether it answers all the modern questions within the classical context. In particular, the E-M theory does not provide a classical platform from which the Dirac equation can be derived in the way Schrodinger's equation is derived from classical mechanics via the energy equation and the Correspondence Principle. The present paper presents a non-dualistic unified field theory (UFT) in the said conceptual framework as propounded by M. A. Tonnelat. By allowing the metric form ds2=g,dx dx and the non-degenerate two-form F=(1/2t)rdx dx to enter symmetrically into the theory we obtain a UFT which contains Einstein's General Relativity and the Born-Infeld electrodynamics as special cases. Above all, it is shown that the Dirac equation describing the electron in an 'external' gravito-electromagnetic field can be derived from the non-dualistic Einstein equation by a simple factorization if the Correspondence Principle is assumed. 展开更多
关键词 A NON-DUALISTIC UNIFIED FIELD theory of gravitation ELECTROMAGNETISM AND SPIN
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Nonlinear electrodynamics coupled to teleparallel theory of gravity
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作者 Gamal G.L.Nashed 《Chinese Physics B》 SCIE EI CAS CSCD 2011年第2期73-82,共10页
Using nonlinear electrodynamics coupled to teleparallel theory of gravity, regular charged spherically symmetric solutions are obtained. The nonlinear theory is reduced to the Maxwell one in the weak limit and the sol... Using nonlinear electrodynamics coupled to teleparallel theory of gravity, regular charged spherically symmetric solutions are obtained. The nonlinear theory is reduced to the Maxwell one in the weak limit and the solutions correspond to charged spacetimes. One of the obtained solutions contains an arbitrary function which we call general solution since we can generate from it the other solutions. The metric associated with these spacetimes is the same, i.e., regular charged static spherically symmetric black hole. In calculating the energy content of the general solution using the gravitational energy momentum within the framework of the teleparallel geometry, we find that the resulting form depends on the arbitrary function. Using the regularized expression of the gravitational energy-momentum we obtain the value of energy. 展开更多
关键词 tetrad theory of gravitation nonlinear electrodynamics spherically symmetric black holes gravitational energy-momentum
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A Possible Modification of Einstein's Theory of General Relativity
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作者 QIANShang-Wu 《Communications in Theoretical Physics》 SCIE CAS CSCD 2004年第3期377-380,共4页
This article suggests a new metric theory of gravitation, in which metric field is determined not only by matter and nongravitational field but also by vector graviton field, and in principle there is no need to intro... This article suggests a new metric theory of gravitation, in which metric field is determined not only by matter and nongravitational field but also by vector graviton field, and in principle there is no need to introduce the Einstein's tensor. In order to satisfy automatically the geodesic postulate, an additional coordinate condition is needed. For the spherically symmetric static field, it leads us to quite different conclusions from those of Einstein's general relativity in the interior region of the surface of infinite redshift. Accurate to the first order of , it obtains the same results about the four experimental tests of general relativity. 展开更多
关键词 general relativity metric theory of gravitation vector graviton field
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Remarks to Gravitation Theories
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作者 Tomas Kala 《Journal of Physical Science and Application》 2019年第2期26-29,共4页
Gravitation is one of the most significant phenomena which attract the attention of humankind for ages. There are twomost influential theories of the Gravitation at the current time being (summer 2019), namely, the Is... Gravitation is one of the most significant phenomena which attract the attention of humankind for ages. There are twomost influential theories of the Gravitation at the current time being (summer 2019), namely, the Isaac Newton’s Theory ofGravitation and Albert Einstein’s General Theory of Relativity, which includes an explanation of the gravitation. However, both ofthem are incommensurate — so far — with plenty of quantum theories of the World. In this contribution, there is outlined a strategyfor unifying the current approaches to the Gravitation. Namely, that the gravitation/gravity should be considered as a consequence ofinteraction — a “pinning effect” — of the Spacetime with the non-integral spin of the Fermions, to saturate/add/ the missing part ofthem. It might induce a deformation/curvature of the Spacetime and known effects on moving material objects, as well aselectromagnetic radiation, including light, and other types of radiation, and properties/parameters of transformations of fields,described in the General Theory of Relativity and another. It is Gravitation which modifies/creates Spacetime curvature and itsfeatures and not vice versa. 展开更多
关键词 gravitation theories of gravitation quantum theories general theory of relativity unified theory of gravitation.
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Gravitation, Holographic Principle, and Extra Dimensions
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作者 Roberto Caimmi 《Journal of Modern Physics》 2016年第5期426-434,共9页
Within the context of Newton’s theory of gravitation, restricted to point-like test particles and central bodies, stable circular orbits in ordinary space are related to stable circular paths on a massless, unmovable... Within the context of Newton’s theory of gravitation, restricted to point-like test particles and central bodies, stable circular orbits in ordinary space are related to stable circular paths on a massless, unmovable, undeformable vortex-like surface, under the action of a tidal gravitational field along the symmetry axis. An interpretation is made in the light of a holographic principle, in the sense that motions in ordinary space are connected with motions on a selected surface and vice versa. Then ordinary space is conceived as a 3-hypersurface bounding a n-hypervolume where gravitation takes origin, within a n-hyperspace. The extension of the holographic principle to extra dimensions implies the existence of a minimum distance where test particles may still be considered as distinct from the central body. Below that threshold, it is inferred test particles lose theirs individuality and “glue” to the central body via unification of the four known interactions and, in addition, 1) particles can no longer be conceived as point-like but e.g., strings or membranes, and 2) quantum effects are dominant and matter turns back to a pre-big bang state. A more detailed formulation including noncircular motions within the context of general relativity, together with further knowledge on neutron stars, quark stars and black holes, would provide further insight on the formulation of quantum gravity. 展开更多
关键词 Newtionian theory of gravitation Holographic Principle Extra Dimensions
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