Fermionic and scalar fields as sources of interacting dark matter-dark energy
arXiv:1109.0559 · doi:10.1142/S0218271811020500
Abstract
From a variational action with non-minimal coupling with a scalar field and classical scalar and fermionic interaction, cosmological field equations can be obtained. Imposing a FLRW metric the equations lead directly to a cosmological model consisting of two interacting fluids, where the scalar field fluid is interpreted as dark energy and the fermionic field fluid is interpreted as dark matter. Several cases were studied analytically and numerically. An important feature of the non-minimal coupling is that it allows crossing the barrier from a quintessence to phantom behavior. The insensitivity of the solutions to one of the parameters of the model permits it to find an almost analytical solution for the cosmological constant type of universe.
References in corpus (9)
- Seven-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
- Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
- Inhomogeneous Equation of State of the Universe: Phantom Era, Future Singularity and Crossing the Phantom Barrier
- Fermions as sources of accelerated regimes in cosmology
- Dark Energy Model with Spinor Matter and Its Quintom Scenario
- A Field Theory Model for Dark Matter and Dark Energy in Interaction
- Dark energy interacting with two fluids
- Late-time acceleration and Phantom Divide Line Crossing with Non-minimal Coupling and Lorentz Invariance Violation
- Interacting Dark Energy: Decay into Fermions