A fluid of black holes at the beginning of the Universe

TL;DR

This paper explores a model where the early universe is described as a dense fluid of black holes, addressing challenges in classical descriptions and proposing a quantum black hole fluid with percolation properties as a potential explanation for the universe's energy content.

Contribution

It introduces a novel black hole fluid model for the early universe, linking quantum black hole behavior to cosmological energy content and addressing classical limitations.

Findings

Black hole fluid can model the early universe's entropy.

Quantum black hole fluid may resolve classical coalescence issues.

Percolation at the critical point relates to current universe energy.

Abstract

The most entropic fluid can be related to a dense gas of black holes that we use to study the beginning of the universe. We encounter difficulties to compatibilize an adiabatic expansion with the growing area for the coalescence of black holes. This problem may be circumvented for a quantum black hole fluid, whose classical counterpart can be described by a percolating process at the critical point. This classical regime might be related to the energy content of the current universe.