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arXiv · 1405.1026

Cosmological entropy production and viscous processes in the (1+3+6)-dimensional space-times

Kenji Tomita
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Abstract

The cosmological entropy production is studied in the (1+3+6)-dimensional space-times consisting of the outer space (the 3-dimensional expanding section) and the inner space (the 6-dimensional section). The inner space expands initially and contracts later. First it is shown how the production of the 3-dimensional entropy S_3 within the horizon is strengthened by the dissipation due to viscous processes between the two spaces, in which we consider the viscosity caused by the gravitational-wave transport. Next it is shown under what conditions we can have the critical epoch when S_3 reaches the value 10^{88} in the Guth level and at the same time the outer space is decoupled from the inner space. Moreover, the total entropy S_9 in the 9-dimensional space at the primeval expanding stage is also shown corresponding to S_3.

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Kenji Tomita. 2014-05-23. Cosmological entropy production and viscous processes in the (1+3+6)-dimensional space-times. https://doi.org/10.1093/ptep%2Fptu061

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