2021/04/30 by Alexander B. Balakin, Anna O. Efremova
Earth and Planetary Sciences · Physics and Astronomy · #Axion #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #Dark matter #Earth Systems and Cosmic Evolution #Fermion #Fermionic field #Friedmann–Lemaître–Robertson–Walker metric #Pseudoscalar #Spinor #Spinor field #astro-ph.GA #gr-qc #hep-th
paper · pdf · doi:10.1140/epjc/s10052-021-09341-z
published as EPJC: 81,674(2021) · 12 pages, 0 figures; revised version published in The European Physical Journal C
openalex created_date 2021/05/10 · openalex publication_date 2021/07/01 · arxiv created 2021/09/04 · arxiv updated 2021/09/07 · openalex updated_date 2026/08/05
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.