TL;DR
This paper proposes a holographic model of the early universe, describing it as a dense black hole fluid, and explores how such a state could evolve into a universe with observable microwave background fluctuations.
Contribution
It introduces a mathematical model of holographic cosmology based on a black hole fluid, offering an alternative to inflationary models for early universe evolution.
Findings
Microwave background fluctuations can originate from black hole fluid fluctuations.
The model's features depend on parameters not yet derived from first principles.
Different parameter ranges produce distinct fluctuation characteristics.
Abstract
We describe a cosmology of the very early universe, based on the holographic principle of 't Hooft and Susskind. We have described the initial state as a dense black hole fluid. Here we present a mathematical model of this heuristic picture, as well as a non-rigorous discussion of how a more normal universe could evolve out of such a state. The gross features of the cosmology depend on a few parameters, which cannot yet be calculated from first principles. For some range of these parameters, microwave background fluctuations originate from fluctuations in the black hole fluid, and have characteristics different from those of most inflationary models.
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