Issue |
Europhys. Lett.
Volume 38, Number 1, April 1997
|
|
---|---|---|
Page(s) | 7 - 11 | |
Section | General | |
DOI | https://doi.org/10.1209/epl/i1997-00527-x | |
Published online | 01 September 2002 |
A universe with torsion
Dipartimento di Scienze Fisiche - Mostra d'Oltremare, Pad. 19, 80125 Napoli, Italy.
Received:
24
September
1996
Accepted:
13
February
1997
In the context of the ECSK theory of gravitation we have obtained the solutions of the
Einstein-Dirac equations in a
Friedmann-Robertson-Walker spatially flat universe when spin has only one
non-zero space-component. All solutions are singular: one of these is bounded and describes
a universe
whose lifetime is , independently of initial conditions; the others
describe a spatially flat open expanding or contracting universe, where spin increases the
expansion rate or the contraction rate, respectively, of the universe for time intervals
in a neighbourhood of the singularities.
PACS: 04.50.+h – Gravity in more than four dimensions, Kaluza-Klein theory, unified field theories; alternative theories of gravity / 98.80.-k – Cosmology
© EDP Sciences, 1997
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.