Abstract
A formulation of cosmology driven by fermions ψ is studied. Assumption that the expectation value of the fermion bilinear is non-zero simplifies the homogeneous solution of the Dirac equations and connects the spinor field with the scale parameter of the universe. With coupling between the Einstein term and spinor field [Formula preented], the possibility for a late time interaction emerges. In that way, the early universe agrees with ΛCDM model, but for the late universe the new integrating term dominates.
Original language | English |
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Article number | 116251 |
Journal | Nuclear Physics B |
Volume | 992 |
DOIs | |
State | Published - 1 Jul 2023 |
Externally published | Yes |
ASJC Scopus subject areas
- Nuclear and High Energy Physics