Spinfluid Phase Transitions

TL;DR

This paper proposes a model where a nearly-homogeneous spinor medium undergoes phase transitions, leading to phenomena like inflation, baryogenesis, and dark energy, through the dynamics of a spinfoam structure and its energy potential.

Contribution

It introduces a novel spinfluid framework with phase transitions that explain key cosmological phenomena and unifies them via a thermodynamic approach involving a heat bath of vacuum spinors.

Findings

Identification of phase transitions corresponding to inflation and baryogenesis.

Derivation of a quartic dilation potential with one or two minima.

Proposal of vacuum spinors as dark energy component.

Abstract

We start with the spinfluid: a nearly-homogeneous, 8-spinor medium, with small local eddies and twists. As it expends, these seed a raft of intersecting codimension-J singularities: a spinfoam. As this expands, the energy trapped in each (4-J) brane varies as the Jth power of the scale factor. Summing on J=(0,1,2,3,4) creates a quartic dilation potential with either 1 or 2 minima: preferred length and mass scales. The spinfoam expands forever with 1 minimum, but recontracts with 2. To quantize it, we take a canonical ensemble of spinfoams, immersed in a heat bath of vacuum spinors, whose microstates vastly outnumber the matter states. It's evolution is governed by a free energy which admits phase transitions at two critical scale, separated by a triple point.Their critical droplets correspond to the varieties of leptons and hadrons.We identify the first as inflation, the second as baryogenesis; and the heat bath of vacuum spinors as dark energy.