New Einstein Gravitation*

2 00 5 Einstein , Hilbert and Equations of Gravitation

• The history of the equations of gravitational field is of particular interest because they are related to two famous names: Albert Einstein and David Hilbert, and because the circumstances of their invention bear sometimes almost detective character. One of the early references is the book " Einstein, Hilbert and the Theory of Gravitation " by a renowned historian of science J. Mehra [1], whe...

Zero-point Fields, Gravitation and New Physics

Ja n 19 98 Comments on the Unification of Electromagnetism and Gravitation through “ Generalized Einstein manifolds ”

H. Akbar-Zadeh has recently proposed (J Geom Phys 17 (1995) 342) a new geometric formulation of Einstein–Maxwell system with source in terms of what are called “Generalized Einstein manifolds”. We show that, contrary to the claim, Maxwell equations have not been derived in this formulation and that, the assumed equations can be identified only as sourcefree Maxwell equations in the proposed geo...

Beyond Einstein Perspectives on Geometry, Gravitation, and Cosmology in the Twentieth Century

Einstein Vs Maxwell: Is Gravitation a Curvature of Space, a Field in Flat Space, or Both?

Starting with a field theoretic approach in Minkowski space, the gravitational energy momentum tensor is derived from the Einstein equations in a straightforward manner. This allows to present them as acceleration tensor = const. × total energy momentum tensor. For flat space cosmology the gravitational energy is negative and cancels the material energy. In the relativistic theory of gravitatio...