The theory of gravitational lensing is reviewed from a spacetime perspective, without quasi-
Newtonian approximations. More precisely, the review covers all aspects of gravitational …

We discuss effects of loss of coherence in low energy quantum systems caused by or related
to gravitation, referred to as gravitational decoherence. These effects, resulting from random …

Expansion of supersymmetric string theory suggests that the leading quadratic curvature
correction to the Einstein action is the Gauss-Bonnet invariant. We show that this model has …

A gravitational theory is formulated on the Weitzenböck space-time, characterized by the
vanishing curvature tensor (absolute parallelism) and by the torsion tensor formed of four …

This paper contains an investigation of spaces with a two parameter Abelian isometry group
in which the Hamilton-Jacobi equation for the geodesies is soluble by separation of …

Einstein's field equations are studied under the assumptions that (1) the source of the
gravitational field is a perfect fluid, and (2) there exists a group of motions simply transitive …

A new general class of solutions of the Einstein-Maxwell equations is presented. It depends
on seven arbitrary parameters that group in a natural way into three complex parameters m+ …

The gravitational field of a massless point particle is first calculated using the linearized field
equations. The result is identical with the exact solution, obtained from the Schwarzschild …

All purely bosonic supersymmetric solutions of minimal supergravity in five dimensions are
classified. The solutions preserve either one half or all of the supersymmetry. Explicit …

This is a text on classical general relativity from a geometrical viewpoint. Introductory
chapters are provided on algebra, topology and manifold theory, together with a chapter on …