Five-dimensional solutions for the modified Einstein-Hilbert lagrangian

Details Five-dimensional solutions for the modified Einstein-Hilbert lagrangian Five-dimensional solutions for the modified Einstein-Hilbert lagrangian

Jan 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993gregr..25...41h&link_type=abstract

General Relativity and Gravitation, Volume 25, Issue 1, pp.41-53

Physics

1

Scientific paper

We find five-dimensional solutions to the equations of motion developed by Henriques. These equations are associated with the Einstein-Hubert lagrangian as modified in order to model the low-energy limit of some superstring theories. We look at extensions of both Friedmann-Robertson-Walker and Kasner models and find a large variety of behavior for both vacuum and matter-filled cases. In the case of the Kasner extension we find that the generalized Einstein equations do not admit analytic power-law solutions.

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