Our Universe from the cosmological constant
arXiv:1406.3706 · doi:10.1088/1475-7516/2014/12/037
Abstract
In this article, we consider a bouncing Universe, as described for example by Loop Quantum Cosmology. If the current acceleration is due to a true cosmological constant, this constant is naturally conserved through the bounce and the Universe should also be in a (contracting) de Sitter phase in the remote past. We investigate here the possibility that the de Sitter temperature in the contracting branch fills the Universe with radiation and causes the bounce and the subsequent inflation and reheating. We also consider the possibility that this gives rise to a cyclic model of the Universe and suggest some possible tests.
arXiv comment5 pages, accepted by JCAP
References in corpus (41)
- Loop Quantum Cosmology: A Status Report
- The Pre-Big Bang Scenario in String Cosmology
- Cosmic Evolution in a Cyclic Universe
- Loop Quantum Gravity
- Lectures on Loop Quantum Gravity
- Inflation and de Sitter Thermodynamics
- The IR stability of de Sitter: Loop corrections to scalar propagators
- Loop Quantum Cosmology: An Overview
- Loop quantum cosmology and the k = - 1 RW model
- Primordial perturbations in a non singular bouncing universe model
- Probability of Inflation in Loop Quantum Cosmology
- Infrared Sensitivity of Unstable Vacua
- Introduction to Loop Quantum Cosmology
- On the Instability of Global de Sitter Space to Particle Creation
- The Trace-Free Einstein Equations and inflation
- Quantum deformation of two four-dimensional spin foam models
- Exotic singularities and spatially curved Loop Quantum Cosmology
- Observational issues in loop quantum cosmology
- Singularity Resolution in Loop Quantum Cosmology: A Brief Overview
- One-loop gravitational wave spectrum in de Sitter spacetime
- Perturbative S-matrix for massive scalar fields in global de Sitter space
- Duration of inflation and conditions at the bounce as a prediction of effective isotropic loop quantum cosmolog
- Thermodynamics and/of Horizons: A Comparison of Schwarzschild,RINDLER and desitter Spacetimes
- Open FRW model in Loop Quantum Cosmology
- Cosmological constant in spinfoam cosmology
- A classical bounce: constraints and consequences
- Quantum Cosmology: Effective Theory
- The IR stability of de Sitter QFT: Physical initial conditions
- Observables in Loop Quantum Gravity with a cosmological constant
- de Sitter thermodynamics and the braneworld
- Observational effects from quantum cosmology
- Holographic Thermodynamic on the Brane in Topological Reissner-Nordström de Sitter Space
- On Thermalization in de Sitter Space
- Non singular bounce in modified gravity
- de Sitter Thermodynamics: A glimpse into non equilibrium
- de Sitter thermodynamics in the canonical ensemble
- A conformally coupled massive scalar field in the de Sitter expanding universe with the mass term treated as a perturbation
- On de Sitter radiation via quantum tunneling
- De Sitter Thermodynamics from Diamonds's Temperature
- Pre-Big-Bang Cosmology and Circles in the Cosmic Microwave Background
- Lovelock inflation and the number of large dimensions