ar X iv : g r - qc / 9 81 10 50 v 1 1 6 N ov 1 99 8 Are Decoherent Histories logically consistent ? Angelo

ar X iv : g r - qc / 9 81 10 89 v 1 2 6 N ov 1 99 8 Spectral methods in general relativistic astrophysics

We present spectral methods developed in our group to solve three-dimensional partial differential equations. The emphasis is put on equations arising from astro-physical problems in the framework of general relativity.

ar X iv : g r - qc / 9 51 10 48 v 1 1 6 N ov 1 99 5 Two lectures on Two - Dimensional Gravity ∗

ar X iv : g r - qc / 9 81 10 22 v 1 6 N ov 1 99 8 The one - loop divergences of the linear gravity withthe torsion terms in tetrad approach

In this paper we discuss the connection between the geometric and tetrad approaches in the quantum affine-metric gravity. The corresponding transition formulas are obtained at the one-loop level. As an example, the one-loop counterterms are calculated in the tetrad formalism in the theory with terms quadratic in the torsion field. This model possesses the extra local symmetries connected with t...

ar X iv : g r - qc / 9 61 10 11 v 1 5 N ov 1 99 6 On Relation between String Theory and Multidimensional Cosmology

It is shown that a transition from a multidimensional cosmological model with one internal space of the dimension d 1 to the effective tree-level bosonic string corresponds to an infinite number of the internal dimensions: d 1 → ∞.

ar X iv : g r - qc / 9 71 10 36 v 1 1 1 N ov 1 99 7 Local Cosmic String In Generalised Scalar Tensor Theory

A recent investigation shows that a local gauge string with a phenomenological energy momentum tensor, as prescribed by Vilenkin, is inconsistent in Brans-Dicke theory. In this work it has been shown that such a string is consistent in a more general scalar tensor theory where ω is function of the scalar field.A set of solutions of full nonlinear Einstein's equations for interior region of such...