Trapping the Kaluza-Klein scalar

Details Trapping the Kaluza-Klein scalar Trapping the Kaluza-Klein scalar

Mar 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991gregr..23..313s&link_type=abstract

General Relativity and Gravitation, Volume 23, Issue 3, pp.313-319

Computer Science

3

Scientific paper

The Kaluza-Klein unified theory predicts the existence of a Brans-Dicke type scalar field withω = 0. Solar system experiments do, however, imply that gravitational scalar fields must be suppressed either by a very weak coupling to matter (ω > 500) or a self-interaction. Here the consequences of a self-interaction potential of the Kaluza-Klein scalar are investigated. By suppressing the scalar field in this way, the one-body metric reduces to the Schwarzschild solution. The cosmologies of the scalar-tensor model are, however, very different from cosmologies of Einstein's theory, since here the time evolution of the cosmic scale-factor is determined only by the initial conditions. These may be chosen so that the theory is compatible with the hypothesis of primordial nucleosynthesis.

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