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Exterior differential system for cosmological G_2 perfect fluids and geodesic completeness

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dc.contributor.authorFernández Jambrina, Leonardo
dc.contributor.authorGonzález Romero, Luis Manuel
dc.date.accessioned2023-06-20T20:10:14Z
dc.date.available2023-06-20T20:10:14Z
dc.date.issued1999-03
dc.description© 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.
dc.description.abstractIn 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.
dc.description.departmentDepto. de Física Teórica
dc.description.facultyFac. de Ciencias Físicas
dc.description.refereedTRUE
dc.description.sponsorshipDirección General de Enseñanza Superior
dc.description.statuspub
dc.eprint.idhttps://eprints.ucm.es/id/eprint/33051
dc.identifier.doi10.1088/0264-9381/16/3/023
dc.identifier.issn0264-9381
dc.identifier.officialurlhttp://dx.doi.org/10.1088/0264-9381/16/3/023
dc.identifier.relatedurlhttp://iopscience.iop.org
dc.identifier.relatedurlhttp://arxiv.org/abs/gr-qc/9812039
dc.identifier.urihttps://hdl.handle.net/20.500.14352/59737
dc.issue.number3
dc.journal.titleClassical and quantum gravity
dc.language.isoeng
dc.page.final972
dc.page.initial953
dc.publisherIOP Publishing Ltd
dc.relation.projectIDPB95-0371
dc.rights.accessRightsopen access
dc.subject.cdu51-73
dc.subject.keywordInhomogeneous cosmologies
dc.subject.keywordSingularity
dc.subject.ucmFísica-Modelos matemáticos
dc.subject.ucmFísica matemática
dc.titleExterior differential system for cosmological G_2 perfect fluids and geodesic completeness
dc.typejournal article
dc.volume.number16
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