Cosmological constant from quarks and torsion

Abstract

We present a simple and natural way to derive the observed small, positive cosmological constant from the gravitational interaction of condensing fermions. In the Riemann-Cartan spacetime, torsion gives rise to the axial-axial four-fermion interaction term in the Dirac Lagrangian for spinor fields. We show that this nonlinear term acts like a cosmological constant if these fields have a nonzero vacuum expectation value. For quark fields in QCD, such a torsion-induced cosmological constant is positive and its energy scale is only about 8 times larger than the observed value. Adding leptons to this picture could lower this scale to the observed value.

4 pages; published version

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Cited by in corpus (26)

• Nonsingular, big-bounce cosmology from spinor-torsion coupling
• Beyond Einstein-Cartan gravity: Quadratic torsion and curvature invariants with even and odd parity including all boundary terms
• Neutrino coupling to cosmological background: A review on gravitational Baryo/Leptogenesis
• Matter-antimatter asymmetry and dark matter from torsion
• Stability of the Einstein static universe in Einstein-Cartan theory
• Einstein-Cartan Cosmologies
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• Dark spinor model with torsion and cosmology
• Einstein-Cartan Gravity with Torsion Field Serving as Origin for Cosmological Constant or Dark Energy Density
• Emergent scenario in the Einstein-Cartan theory
• Torsion, an alternative to dark matter?
• Four-fermion interaction from torsion as dark energy
• Quantum vacuum, dark matter, dark energy and spontaneous supersymmetry breaking
• Boson mixing and flavor vacuum in the expanding Universe: a possible candidate for the dark energy
• Dark matter and dark energy induced by condensates
• Analyzing Black Hole super-radiance Emission of Particles/Energy from a Black Hole as a Gedankenexperiment to get bounds on the mass of a Graviton
• Torsion gravity with non-minimally coupled fermionic field: some cosmological models
• Renormalizability of the Dirac Equation in Torsion-Gravity with Non-Minimal Coupling
• Torsion at different scales: from materials to the Universe
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• Einstein-Cartan-Dirac gravity with $U(1)$ symmetry breaking
• Spinor fields in $f(\mathcal{Q})$-gravity
• Cosmological bounces, cyclic universes, and effective cosmological constant in Einstein-Cartan-Dirac-Maxwell theory
• Beyond Einstein: A Polynomial Affine Model of Gravity
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• Torsional four-fermion interaction and the Raychaudhuri equation