Kaluza-Klein cosmologies

Details Kaluza-Klein cosmologies Kaluza-Klein cosmologies

Dec 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982nuphb.209..146f&link_type=abstract

Nuclear Physics B, Volume 209, Issue 1, p. 146-156.

Physics

Nuclear Physics

306

Scientific paper

In generalized Kaluza-Klein theories the scale set by the size of the extra space-dimensions is close to the grand unification scale of supersymmetric GUT's with minimal number of Higgs supermultiplets. In view of this observation, we explore cosmologies in which the ``effective'' dimensionality of space depends on time. Such cosmologies are studied in higher-dimensional Jordan-Brans-Dicke theories, and in 10- and 11-dimensional supergravity. The preferential expansion of three space-like dimensions is noted in the latter theory. Cosmology in pure higher-dimensional Einstein theory, where there is no preferential expansion of three space-like dimensions, has been discussed by Chodos and Detweiler.

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