ar X iv : g r - qc / 9 90 61 19 v 1 2 9 Ju n 19 99 Gravitational memory of natural wormholes

ar X iv : g r - qc / 9 90 40 83 v 2 1 2 Ju n 19 99 Black Holes and Wormholes in 2 + 1 Dimensions ∗

Vacuum Einstein theory in three spacetime dimensions is locally trivial, but admits many solutions that are globally different, particularly if there is a negative cosmological constant. The classical theory of such locally “anti-de Sitter” spaces is treated in an elementary way, using visualizable models. Among the objects discussed are black holes, spaces with multiple black holes, their hori...

ar X iv : g r - qc / 9 80 61 06 v 1 2 6 Ju n 19 98 Free Fields for Chiral

We give an explicit canonical transformation which transforms a generic chiral 2D dilaton gravity model into a free field theory.

ar X iv : g r - qc / 9 61 20 09 v 1 3 D ec 1 99 6 Signal analysis of gravitational waves

ar X iv : g r - qc / 9 90 10 19 v 1 7 J an 1 99 9 REMARKS ON SUPERENERGY TENSORS

We define (super) n-energy tensors for non-gravitational fields. The possibility of interchange of superenergy between gravitational and other fields is considered. 1 The Bel-Robinson tensor and its properties. The Bel-Robinson (BR) tensor 1,2 is defined by T αβλµ ≡ C αρλσ C β µ ρ σ + * C αρλσ * C β µ ρ σ (1) where C αρλσ is the Weyl tensor and * indicates the usual dual operation: * C αβλµ ≡ (...

ar X iv : g r - qc / 9 90 80 29 v 1 9 A ug 1 99 9 Traversable wormholes from massless conformally coupled scalar fields

The massless conformally coupled scalar field is characterized by the so-called “new improved stress-energy tensor”, which is capable of classically violating the null energy condition. When coupled to Einstein gravity we find a three-parameter class of exact solutions. These exact solutions include the Schwarzschild geometry, assorted naked singularities, and a large class of traversable wormh...