A COVARIANT DETERMINATION OF THE WEYL CANONICAL FRAMES IN PETROV TYPE-I SPACETIMES

Authors
FERRANDO JJ SAEZ JA
Citation
Jj. Ferrando et Ja. Saez, A COVARIANT DETERMINATION OF THE WEYL CANONICAL FRAMES IN PETROV TYPE-I SPACETIMES, Classical and quantum gravity, 14(1), 1997, pp. 129-138
Citations number
27
Categorie Soggetti
Physics
Journal title
Classical and quantum gravity → ACNP
ISSN journal
02649381
Volume
14
Issue
1
Year of publication
1997
Pages
129 - 138
Database
ISI
SICI code
0264-9381(1997)14:1<129:ACDOTW>2.0.ZU;2-I
Abstract
A covariant algorithm is given to obtain principal 2-forms, Debever nu ll directions and canonical frames associated with Petrov type I Weyl tensors. The relationship between these Weyl elements is explained, an d their explicit expressions depending on Weyl invariants are obtained . These results are used to determine a cosmological observer in type I universes, and their usefulness in spacetime intrinsic characterizat ion is shown.