Stochastic collapse
arXiv:1910.10000 · doi:10.1088/1475-7516/2020/01/026
Abstract
We investigate cosmological models described by a scalar field with an exponential potential, and apply the stochastic formalism, which allows us to study how quantum field fluctuations give rise to stochastic noise. This modifies the classical dynamics of the scalar field at large scales, above a coarse-graining scale. In particular we explore how quantum field fluctuations perturb the equation of state on large scales which can lead to a quantum instability of the classical collapse solution below the Planck scale in the case of a pressureless collapse.
1 figure, 3 tables. Version matching the one published in JCAP
References in corpus (53)
- Nine-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Parameter Results
- The Ekpyrotic Universe: Colliding Branes and the Origin of the Hot Big Bang
- Inflation Dynamics and Reheating
- Pre-Big-Bang in String Cosmology
- A new approach to the evolution of cosmological perturbations on large scales
- Equilibrium State of a Massless Self-Interacting Scalar Field in the De Sitter Background
- Scaling solutions in general non-minimal coupling theories
- From the Big Bang Theory to the Theory of a Stationary Universe
- The cosmon model for an asymptotically vanishing time-dependent cosmological ``constant''
- On the Generation of a Scale-Invariant Spectrum of Adiabatic Fluctuations in Cosmological Models with a Contracting Phase
- Bouncing Cosmologies: Progress and Problems
- Duality Invariance of Cosmological Perturbation Spectra
- A Critical Review of Classical Bouncing Cosmologies
- Exploring Bouncing Cosmologies with Cosmological Surveys
- Suppressing CMB Quadrupole with a Bounce from Contracting Phase to Inflation
- Quantum diffusion during inflation and primordial black holes
- Cosmology with positive and negative exponential potentials
- Stable bounce and inflation in non-local higher derivative cosmology
- Cosmological perturbations through a simple bounce
- Obtaining the CMB anomalies with a bounce from the contracting phase to inflation
- Cosmology without inflation
- A non inflationary model with scale invariant cosmological perturbations
- Stochastic Inflation:The Quantum Phase Space Approach
- Stochastic inflation in phase space: Is slow roll a stochastic attractor?
- Stochastic inflation beyond slow roll
- Coarse-Grained Effective Action and Renormalization Group Theory in Semiclassical Gravity and Cosmology
- G-Bounce Inflation: Towards Nonsingular Inflation Cosmology with Galileon Field
- The attractive behaviour of ultra-slow-roll inflation
- Nonequilibrium inflaton dynamics and reheating. II. Fermion production, noise, and stochasticity
- Influence of Super-Horizon Scales on Cosmological Observables Generated during Inflation
- Inflaton Decay in De Sitter Spacetime
- Evidence for bouncing evolution before inflation after BICEP2
- Bouncing alternatives to inflation
- Multi-field Inflation with a Random Potential
- Stochastic dark energy from inflationary quantum fluctuations
- Can all the infrared secular growth really be understood as increase of classical statistical variance?
- Consistent Scalar and Tensor Perturbation Power Spectra in Single Fluid Matter Bounce with Dark Energy Era
- Stochastic approach to inflation II: classicality, coarse-graining and noises
- Perturbations in stochastic inflation
- Stochastic Dynamics of Coarse-Grained Quantum Fields in Inflationary Universe
- Jordan-Brans-Dicke Stochastic Inflation
- Affine quantisation of the Brans-Dicke theory: Smooth bouncing and the equivalence between the Einstein and Jordan frames
- Coarse-Grained Back Reaction in Single Scalar Field Driven Inflation
- Thermal Interpretation of Infrared Dynamics in de Sitter
- Entanglement of Coarse Grained Quantum Field in the Expanding Universe
- Renormalisation group improvement in the stochastic formalism
- Regular Bouncing Solutions, Energy Conditions and the Brans-Dicke Theory
- Multiple spectator condensates from inflation
- Coarse-grained field wave function in stochastic inflation
- Decoherence of gauge-invariant metric fluctuations during inflation
- A quasi-matter bounce equivalent to Starobinsky inflation
- Stochastic approach to de Sitter instability and eternal inflation
- Quantally fed steady-state domain distributions in Stochastic Inflation
Cited by in corpus (6)
- Hamiltonian formalism for cosmological perturbations: the separate-universe approach
- Unavoidable shear from quantum fluctuations in contracting cosmologies
- Non-Standard Primordial Clocks from Dynamical Mass in Alternative to Inflation Scenarios
- Hamiltonian formalism for cosmological perturbations: fixing the gauge
- Inflation: a quantum laboratory on cosmological scales
- Separate universe in multifield inflation: a phase-space approach