Pseudo-rip: Cosmological models intermediate between the cosmological constant and the little rip

Abstract

If we assume that the cosmic energy density will remain constant or strictly increase in the future, then the possible fates for the universe can be divided into four categories based on the time asymptotics of the Hubble parameter H(t): the cosmological constant, for which H(t) = constant, the big rip, for which H(t) goes to infinity at finite time, the little rip, for which H(t) goes to infinity as time goes to infinity, and the pseudo-rip, for which H(t) goes to a constant as time goes to infinity. Here we examine the last of these possibilities in more detail. We provide models that exemplify the pseudo-rip, which is an intermediate case between the cosmological constant and the little rip. Structure disintegration in the pseudo-rip depends on the model parameters. We show that pseudo-rip models for which the density and Hubble parameter increase monotonically can produce an inertial force which does not increase monotonically, but instead peaks at a particular future time and then decreases.

4 pages, 2 figures, title changed to agree with published version

References in corpus (4)

• Improved Cosmological Constraints from New, Old and Combined Supernova Datasets
• Spectra and Light Curves of Six Type Ia Supernovae at 0.511 < z < 1.12 and the Union2 Compilation
• Improved Dark Energy Constraints from ~100 New CfA Supernova Type Ia Light Curves
• Models for Little Rip Dark Energy

Cited by in corpus (107)

• Dark energy cosmology: the equivalent description via different theoretical models and cosmography tests
• Teleparallel Gravity: From Theory to Cosmology
• Reconstruction of $f(T)$ gravity: Rip cosmology, finite-time future singularities and thermodynamics
• Viscous Cosmology for Early- and Late-Time Universe
• Inflationary universe from perfect fluid and $F(R)$ gravity and its comparison with observational data
• The Viability of Phantom Dark Energy: A Brief Review
• Constraining $f(Q,T)$ gravity from energy conditions
• Two-Fluid Scenario for Dark Energy Models in an FRW Universe-Revisited
• Future singularities and Teleparallelism in Loop Quantum Cosmology
• Turbulence and Little Rip Cosmology
• Reconstruction and constraining of the jerk parameter from OHD and SNe Ia observations
• Characteristic Properties of Two Different Viscous Cosmology Models for the Future Universe
• Dark Energy Coupled with Dark Matter in Viscous Fluid Cosmology
• General Bulk-Viscous Solutions and Estimates of Bulk Viscosity in the Cosmic Fluid
• Rip cosmological models in extended symmetric teleparallel gravity
• Observational constraints on cosmological future singularities
• Regularizing cosmological singularities by varying physical constants
• Deformed Matter Bounce with Dark Energy Epoch
• Quasi-Rip: A New Type of Rip Model without Cosmic Doomsday
• $H_0$ Tension and the Phantom Regime: A Case Study In Terms of an Infrared $f(T)$ Gravity
• Confronting dark energy models mimicking $\Lambda$CDM epoch with observational constraints: future cosmological perturbations decay or future Rip?
• Phantom singularities and their quantum fate: general relativity and beyond
• Viscosity-Induced Crossing of the Phantom Barrier
• Cosmological tests of sudden future singularities
• Recent advances in cosmological singularities
• Tradeoff between Smoother and Sooner "Little Rip"
• Phantom Inflation in Little Rip
• Stability of accelerating cosmology in two scalar-tensor theory: Little Rip versus de Sitter
• Cosmological evolution, future singularities, Little Rip and Pseudo-Rip in viable f(R) theories and their scalar-tensor counterpart
• Grand Rip and Grand Bang/Crunch cosmological singularities
• Observational Constraints on Dynamical Dark Energy Models
• Bounce Universe Induced by an Inhomogeneous Dark Fluid Coupled with Dark Matter
• Effects of New Viscosity Model on Cosmological Evolution
• Temperature Variation in the Dark Cosmic Fluid in the Late Universe
• Archimedean-type force in a cosmic dark fluid: III. Big Rip, Little Rip and Cyclic solutions
• Effective Dark Energy Models and Dark Energy Models with Bounce in frames of $F(T)$ Gravity
• Future dynamics in f(R) theories
• Density preturbations in a finite scale factor singularity universe
• Dissipative Universe-Inflation with Soft Singularity
• Little Rip cosmological models with time-dependent equation of state
• Equation-of-state formalism for dark energy models on the brane and the future of brane universes
• Phantom energy dominated universe as a transient stage in $f(R)$ cosmology
• Ekpyrotic universes in $F(R)$ Hořava-Lifshitz gravity
• The fate of bound systems through Sudden Future Singularities
• Viscosity-Induced Crossing of the Phantom Divide in the Dark Cosmic Fluid
• Cosmological Models Coupled with Dark Matter in a Dissipative Universe
• Quasi-Rip and Pseudo-Rip Universes Induced by the Fluid Inhomogeneous Equation of State
• $f(T)$ cosmology: From Pseudo-Bang to Pseudo-Rip
• The effect of thermal radiation on singularities in the dark universe
• Initial directional singularity in inflationary models
• The classical and quantum fate of the Little Sibling of the Big Rip in $f(R)$ cosmology
• Little Rip and Pseudo Rip Phenomena from Coupled Dark Energy
• Relativistic Viscous Universe Models
• Neutrino generated dynamical dark energy with no dark energy field
• Inhomogeneous Dark Fluid and Dark Matter, Leading to a Bounce Cosmology
• Investigating the physical and geometrical parameters of the cosmological models with anisotropic background
• Redshift drift test of exotic singularity universes
• Examining the Viability of Phantom Dark Energy
• Multiple $\Lambda$CDM cosmology with string landscape features and future singularities
• Cyclic multiverses
• Dark energy and dark matter perturbations in singular universes
• Viscous Accelerating Universe with Non-linear and Logarithmic Equation of State Fluid
• New futures for cosmological models
• Dark Energy and Cosmological Horizon Thermal Effects
• Turbulence Accelerating Cosmology from an Inhomogeneous Dark Fluid
• New perspectives on future rip scenarios with holographic dark energy
• Cyclic Cosmology from the Little Rip
• Effects of a Late Gravitational Transition on Gravitational Waves and Anticipated Constraints
• Little Rip, Pseudo Rip and bounce cosmology with generalized equation of state in non-standard backgrounds
• The Fate of the Universe Evolution in the Quadratic Form of Ricci-Gauss-Bonnet Cosmology
• Non-exotic conformal structure of weak exotic singularities
• Sudden Future Singularities in Quintessence and Scalar-Tensor Quintessence Models
• Considering Late-Time Acceleration in some Cosmological Models
• Transient dark energy, cosmological constant boundary crossing and dark energy $w(z)$ data fits
• Holographic Principle, Cosmological Constant and Cyclic Cosmology
• Thermodynamic analysis for Non-linear system (Van-der-Waals EOS) with viscous cosmology
• Brane cosmology from observational surveys and its comparison with standard FRW cosmology
• Exploring the deviation of cosmological constant by a generalized pressure dark energy model
• Dark energy with $w\to -1$: Asymptotic $\Lambda$ versus pseudo-$\Lambda$
• Strength of the singularities, equation of state and asymptotic expansion
• Flows into de Sitter space from anisotropic initial conditions: An effective field theory approach
• Rips and regular future scenario with Holographic Dark Energy: A comprehensive look
• Thermodynamics and energy condition analysis for Van-Der-Waals EOS without viscous cosmology
• Cosmological Issues in $F(T)$ Gravity Theory
• Cosmological aspects of a vector field model
• Holographic bounce cosmological models induced by viscous dark fluid from a generalized non-singular entropy function
• Strength of singularities in varying constants theories
• Rip Cosmology via Inhomogeneous Fluid
• The Osgood Criterion and Finite-Time Cosmological Singularities
• A pressure parametric dark energy model
• Cosmic anisotropic doomsday in Bianchi type I universes
• Perturbations of Einstein--Maxwell--phantom spacetime: Instabilities of charged Ellis--Bronnikov wormholes and quasinormal modes of black holes
• Parameterization and Reconstruction of Quasi Static Universe
• Quasi-Rip universe induced by the fluid with inhomogeneous equation of state
• On rips and cosmological singularities in a universe merging with baby universes
• A Spectrum of Cosmological Rips and Their Observational Signatures
• Conformal structure of singularities in some varying fundamental constants bimetric cosmologies
• Finite Future Cosmological Singularity Times and Maximum Predictability Times in a Nonlinear FRW-KG Scalar Cosmology
• Cosmological models with Big rip and Pseudo rip Scenarios in extended theory of gravity
• Diagnostics and future evolution analysis of the two parametric models
• Self-interaction in a cosmic dark fluid: The four-kernel rheological extension of the equations of state
• Extended Theories of Gravity in cosmological and astrophysical applications
• Teleparallelism by inhomogeneous dark fluid
• The long freeze: an asymptotically static universe from holographic dark energy
• Evolution of decaying particles and decay products in various scenarios for the future expansion of the universe
• Finite time pseudo-rip singularity in cosmology
• Singularity softening and avoidance by the action of thermal radiation in a generalized entropic cosmology