Abstract
The consequences of a period of Weyl invariance in the early universe are investigated. It is argued that the natural outcome of such a period is a Kaluza-Klein style compactification of an internal space in which any time variation of the scale factor of this space is absorbed (via a Weyl transformation) into the gravitational coupling. A five-dimensional test model is shown to undergo exponential inflation of the space-time sector due to a false vacuum state of the non-metric part of the connection.
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Bradfield, T. The early Weyl universe. Gen Relat Gravit 24, 373–387 (1992). https://doi.org/10.1007/BF00760413
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DOI: https://doi.org/10.1007/BF00760413