Qualitative study in Loop Quantum Cosmology
arXiv:1612.05480 · doi:10.1088/1361-6382/aa9311
Abstract
This work contains a detailed qualitative analysis, in General Relativity and in Loop Quantum Cosmology, of the dynamics in the associated phase space of a scalar field minimally coupled with gravity, whose potential mimics the dynamics of a perfect fluid with a linear Equation of State (EoS). Dealing with the orbits (solutions) of the system, we will see that there are analytic ones, which lead to the same dynamics as the perfect fluid, and our goal is to check their stability, depending on the value of the EoS parameter, i.e., to show whether the other orbits converge or diverge to these analytic solutions at early and late times.
arXiv comment12 pages, 7 figures. Version accepted for publication in CQG
References in corpus (47)
- Introduction to Modified Gravity and Gravitational Alternative for Dark Energy
- Modified gravity with negative and positive powers of the curvature: unification of the inflation and of the cosmic acceleration
- The Ekpyrotic Universe: Colliding Branes and the Origin of the Hot Big Bang
- Properties of singularities in (phantom) dark energy universe
- Loop Quantum Cosmology: A Status Report
- Quantum Nature of the Big Bang: Improved dynamics
- Late-time cosmology in (phantom) scalar-tensor theory: dark energy and the cosmic speed-up
- Black hole entropy in Loop Quantum Gravity
- Are f(R) dark energy models cosmologically viable ?
- Sudden Future Singularities
- Robustness of key features of loop quantum cosmology
- Dark Energy: Vacuum Fluctuations, the Effective Phantom Phase, and Holography
- Future of the universe in modified gravitational theories: Approaching to the finite-time future singularity
- Quantum escape of sudden future singularity
- Deflationary Universe Scenario
- Corrections to the Friedmann Equations from LQG for a Universe with a Free Scalar Field
- Electroweak Baryogenesis and the Expansion Rate of the Universe
- Non-Singular Bouncing Universes in Loop Quantum Cosmology
- More General Sudden Singularities
- Worse than a big rip?
- The Matter Bounce Scenario in Loop Quantum Cosmology
- Cosmology with positive and negative exponential potentials
- Casimir effect in de Sitter and Anti-de Sitter braneworlds
- Avoidance of future singularities in loop quantum cosmology
- Loop cosmological dynamics and dualities with Randall-Sundrum braneworlds
- Matter creation in a nonsingular bouncing cosmology
- Curvature invariants, geodesics and the strength of singularities in Bianchi-I loop quantum cosmology
- Non-singular bounce scenarios in loop quantum cosmology and the effective field description
- Future singularities and Teleparallelism in Loop Quantum Cosmology
- Exotic singularities and spatially curved Loop Quantum Cosmology
- Loop Quantum Gravity and the Cyclic Universe
- Phantom field dynamics in loop quantum cosmology
- Is the future universe singular: Dark Matter versus modified gravity?
- Scalar dark energy models mimicking CDM with arbitrary future evolution
- Singular fate of the universe in modified theories of gravity
- Viability of the matter bounce scenario in Loop Quantum Cosmology from BICEP2 last data
- Turning Big Bang into Big Bounce: I. Classical Dynamics
- Quasi-matter domination parameters in bouncing cosmologies
- Non-singular Ekpyrotic/Cyclic model in Loop Quantum Cosmology
- Non-singular models of universes in teleparallel theories
- Type I singularities and the Phantom Menace
- Running of the scalar spectral index in bouncing cosmologies
- Ekpyrotic loop quantum cosmology
- Loop Quantum Cosmology: A brief review
- Gravitational particle production in bouncing cosmologies
- Cosmological perturbations in teleparallel Loop Quantum Cosmology
- Multi-fluid potential in the loop cosmology
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- Generalized Logarithmic Equation of State in Classical and Loop Quantum Cosmology Dark Energy-Dark Matter Coupled Systems
- The Dapor-Liegener model of Loop Quantum Cosmology: A dynamical analysis
- Viable Inflationary Evolution from Loop Quantum Cosmology Scalar-Tensor Theory