RT Journal Article
T1 Exterior differential system for cosmological G_2 perfect fluids and geodesic completeness
A1 Fernández Jambrina, Leonardo
A1 González Romero, Luis Manuel
AB In this paper a new formalism based on exterior differential systems is derived for perfect-fluid spacetimes endowed with an abelian orthogonally transitive G_2 group of motions acting on spacelike surfaces. This formulation allows simplifications of Einstein equations and it can be applied for different purposes. As an example a singularity-free metric is rederived in this framework. A sufficient condition for a diagonal metric to be geodesically complete is also provided.
PB IOP Publishing Ltd
SN 0264-9381
YR 1999
FD 1999-03
LK https://hdl.handle.net/20.500.14352/59737
UL https://hdl.handle.net/20.500.14352/59737
LA eng
NO © Amer Physical Soc.The present work has been supported by Dirección General de Enseñanza Superior Project PB95-0371. The authors wish to thank F. J. Chinea and M. J. Pareja for valuable discussions.
NO Dirección General de Enseñanza Superior
DS Docta Complutense
RD 6 abr 2025