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The big bang as a higher-dimensional shock wave

P. S. Wesson·H. Liu·S. S. Seahra
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Abstract

We give an exact solution of the five-dimensional field equations which describes a shock wave moving in time and the extra (Kaluza-Klein) coordinate. The matter in four-dimensional spacetime is a cosmology with good physical properties. The solution suggests to us that the 4D big bang was a 5D shock wave.

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P. S. Wesson, H. Liu, S. S. Seahra. 2000-03-03. The big bang as a higher-dimensional shock wave. https://arxiv.org/abs/gr-qc/0003012

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