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doi:10.1016/0550-3213(82)90106-7 
Copyright © 1982 North-Holland Publishing Company. All Rights Reserved. Published by Elsevier Science B.V.
Kaluza-Klein cosmologies*1
Received 22 June 1982.
Available online 18 October 2002.
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Abstract
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.
