Stability analysis of two-fluid dark energy models
arXiv:2101.11392 · doi:10.1088/1402-4896/abdf82
Abstract
In this paper, we have studied the stability of the cosmological models with dark energy and combination of matter fields and dark energy in an anisotropic space time. The pressure anisotropy along the spatial directions are derived and its stability in each direction has been examined. The four models presented here, show its stability on certain spatial direction. The role of matter field on the stability analysis has been obtained. The positive and negative value of cosmic string completely changed the stability behaviour of the model. The presence of a magnetic field disturbs the stability aspects of the models at least in an early epoch.
arXiv comment12 pages, 7 figures, Accepted version Physica Scripta
References in corpus (42)
- An absorption profile centred at 78 megahertz in the sky-averaged spectrum
- Magnetic Fields in the Early Universe
- Cosmological Magnetic Fields: Their Generation, Evolution and Observation
- The Magnetized Universe
- Interacting dark energy in the early 2020s: a promising solution to the and cosmic shear tensions
- Theoretical Models of Dark Energy
- How isotropic is the Universe?
- A Unifying Theory of Dark Energy and Dark Matter: Negative Masses and Matter Creation within a Modified CDM Framework
- Some Bianchi Type Cosmological Models in f(R) Gravity
- How Anisotropic is our Universe?
- Small-Angle CMB Temperature Anisotropies Induced by Cosmic Strings
- An almost isotropic cosmic microwave temperature does not imply an almost isotropic universe
- Comparison of dark energy models: A perspective from the latest observational data
- Searching for dark matter - dark energy interactions: going beyond the conformal case
- CMB Temperature Anisotropy from Broken Spatial Isotropy due to an Homogeneous Cosmological Magnetic Field
- Comparison of dark energy models after Planck 2015
- DM: Observational constraints on unified dark matter with constant speed of sound
- Anisotropic dark energy model with a hybrid scale factor
- Bianchi-V String Cosmological model with Dark Energy Anisotropy
- Stability Analysis in Tachyonic Potential Chameleon cosmology
- Null Signal for the Cosmic Anisotropy in the Pantheon Supernovae Data
- Unified dark fluid in Brans-Dicke theory
- Testing interacting dark matter and dark energy model with cosmological data
- Bulk viscous embedded hybrid dark energy models
- Dynamics of a magnetized Bianchi I universe with vacuum energy
- Unified Dark Fluid with Constant Adiabatic Sound Speed and Cosmic Constraints
- Stability analysis and Observational Measurement in Chameleonic Generalised Brans--Dicke Cosmology
- Can a primordial magnetic field originate large-scale anomalies in WMAP data?
- Constraining the anisotropy of the Universe via Pantheon supernovae sample
- Insight into primordial magnetic fields from 21-cm line observation with EDGES experiment
- Dark Energy Cosmological Models with General forms of Scale Factor
- Testing the Cosmic Anisotropy with Supernovae Data: Hemisphere Comparison and Dipole Fitting
- Stability analysis of cosmological models through Liapunov's method
- On An Interacting New Holographic Dark Energy Model: observational constraints
- Unified Dark Fluid with Constant Adiabatic Sound Speed: Including Entropic Perturbations
- Two fluid anisotropic dark energy models in a scale invariant theory
- Anisotropic cosmological models with two fluids
- Observational constraints on unified dark matter including Hubble parameter data
- Axially magnetized Dark Energy cosmological model
- Stability analysis of the cosmological solutions with induced gravity and scalar field on the brane
- Cosmic Acceleration and Anisotropic models with Magnetic field
- Dynamical System Analysis of a Three Fluid Cosmological Model : An Invariant Manifold approach