Interaction of the axionic dark matter, dynamic aether, spinor and gravity fields as an origin of oscillations of the fermion effective mass

TL;DR

This paper develops an Einstein-Dirac-axion-aether model to analyze how interactions among dark matter, aether, spinor, and gravity fields cause oscillations in fermion effective mass, revealing cosmological epoch dependencies.

Contribution

It introduces a novel self-interacting framework combining axionic dark matter, dynamic aether, and spinor fields, providing exact solutions for the effective fermion mass in cosmological settings.

Findings

Exact solutions for the guiding function in different cosmological constant scenarios.

Expressions for fermion effective mass depend on cosmological epoch and dark fluid state.

Oscillations in fermion mass are linked to interactions among the quartet of fields.

Abstract

In the framework of the Einstein-Dirac-axion-aether theory we consider the quartet of self-interacting cosmic fields, which includes the dynamic aether, presented by the unit timelike vector field, the axionic dark mater, described by the pseudoscalar field, the spinor field associated with fermion particles, and the gravity field. The key, associated with the mechanism of self-interaction, is installed into the modified periodic potential of the pseudoscalar (axion) field constructed on the base of a guiding function, which depends on one invariant, one pseudo-invariant and two cross-invariants containing the spinor and vector fields. The total system of the field equations related to the isotropic homogeneous cosmological model is solved; we have found the exact solutions for the guiding function for three cases: nonzero, vanishing and critical values of the cosmological constant. Based on these solutions, we obtained the expressions for the effective mass of spinor particles, interacting with the axionic dark matter and dynamic aether. This effective mass is shown to bear imprints of the cosmological epoch and of the state of the cosmic dark fluid in that epoch.