Type V singularities with inhomogeneous equations of state
arXiv:2209.07328 · doi:10.1016/j.physletb.2022.137494
Abstract
Interest in cosmological singularities has remarkably grown in recent times, particularly on future singularities with the discovery of late-time acceleration of the universe and dark energy. Recent work has seen a proper classification of such singularities into strong and weak based on their strength, with weak singularities being the likes of sudden, w and big freeze singularities and strong singularities like the big rip. This has led to a classification of such singularities in various types like Big rip is Type 1, w-singularity is type V etc. While singularities of type I-type IV have been discussed vividly by taking into account inhomogeneous equations of state (EOS), the same has not been attempted for type V singularities. So in this work we have discussed in detail about the formation of type V singularities in various cosmologies after considering inhomogeneous equations of state. We consider two inhomogeneous forms of the EOS in the context of four different cosmological backgrounds ; standard general relativistic cosmology, an asymptotically safe cosmology, a cosmology inspired by modified area-entropy relations, generalized uncertainty principles, holographic renormalization and Chern-Simons gravity( all of which can be coincidentally described by the same form of the modified Friedmann equation) and an f(R) gravity cosmology. We show in detail that one sees some very big differences in the occurence conditions of type V singularities when one makes such considerations. In the particular case of the f(R) gravity cosmology, we see that the type V singularities get completely removed. This work goes to show that the creation and formation of type V singularities is influenced most strongly by the form of the equation of state that one considers, way more so than what background cosmology one chooses.
arXiv commentv2 , 20 pages with some references added, matches the published version in PLB
References in corpus (76)
- Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant
- Unified cosmic history in modified gravity: from F(R) theory to Lorentz non-invariant models
- Extended Theories of Gravity
- Cosmological Constant - the Weight of the Vacuum
- Modified Gravity Theories on a Nutshell: Inflation, Bounce and Late-time Evolution
- Quintessence, Cosmic Coincidence, and the Cosmological Constant
- Dark energy cosmology: the equivalent description via different theoretical models and cosmography tests
- Is Cosmic Speed-Up Due to New Gravitational Physics?
- Phantom Energy and Cosmic Doomsday
- In the Realm of the Hubble tension a Review of Solutions
- Curvature Quintessence
- Properties of singularities in (phantom) dark energy universe
- The Generalized Uncertainty Principle and Black Hole Remnants
- Inhomogeneous Equation of State of the Universe: Phantom Era, Future Singularity and Crossing the Phantom Barrier
- Braneworld models of dark energy
- Quintessence: A Review
- The final state and thermodynamics of dark energy universe
- Quantum Groups, Gravity, and the Generalized Uncertainty Principle
- Sudden Future Singularities
- Quintessence as a run-away dilaton
- Finite-time future singularities in modified Gauss-Bonnet and gravity and singularity avoidance
- Observational constraints on dark energy with generalized equations of state
- Quintessence without scalar fields
- Tsallis Holographic Dark Energy
- Tachyons, Scalar Fields and Cosmology
- Quantum escape of sudden future singularity
- Inflation and quintessence with nonminimal coupling
- The future evolution and finite-time singularities in -gravity unifying the inflation and cosmic acceleration
- Generalized Uncertainty Principle: Approaches and Applications
- Quiescent cosmological singularities
- Corrected Entropy-Area Relation and Modified Friedmann Equations
- Modified cosmology from extended entropy with varying exponent
- Worse than a big rip?
- New Cosmological Singularities in Braneworld Models
- Singular Bouncing Cosmology from Gauss-Bonnet Modified Gravity
- Phantom Cosmology without Big Rip Singularity
- Asymptotically safe cosmology - a status report
- Dynamical Systems Perspective of Cosmological Finite-time Singularities in Gravity and Interacting Multifluid Cosmology
- On the cosmological constant problem
- Entropy signature of the running cosmological constant
- Quintessential Inflation on the Brane and the Relic Gravity Wave Background
- Singular Inflationary Universe from Gravity
- Tachyon dark energy models: dynamics and constraints
- Dynamics of interacting dark energy model in Einstein and Loop Quantum Cosmology
- A thermodynamic motivation for dark energy
- Equilibrium thermodynamics in modified gravitational theories
- Quantum effects, soft singularities and the fate of the universe in a braneworld cosmology
- Cosmology from an AdS Schwarzschild black hole via holography
- Dynamics of interacting phantom scalar field dark energy in Loop Quantum Cosmology
- Slow-roll k-essence
- Generalised DBI-Quintessence
- -cosmological singularities
- Did the Universe Experienced a Pressure non-Crushing Type Cosmological Singularity in the Recent Past?
- Big-bounce and future time singularity resolution in Bianchi I: the projective invariant Nieh-Yan case
- Hidden past of dark energy cosmological models
- Is the dark energy equation of state parameter singular?
- Tachyon cosmology, supernovae data and the Big Brake singularity
- Dynamical System Analysis of Cosmologies with Running Cosmological Constant from Quantum Einstein Gravity
- A Study of Finite-time Singularities of Loop Quantum Cosmology Interacting Multifluids
- Dark Energy Properties in DBI Theory
- Singular Cosmology Unifying Early and Late-time Acceleration with Matter and Radiation Domination Era
- Holographic Cosmology from the First Law of Thermodynamics and the Generalized Uncertainty Principle
- Interacting quintessence in light of Generalized Uncertainty Principle: Cosmological perturbations and dynamics
- An interacting New Holographic Dark Energy in the framework of fractal cosmology
- Finite time future singularities in the interacting dark sector
- Brane-like singularities with no brane
- The effect of thermal radiation on singularities in the dark universe
- A Dark Energy Model with Generalized Uncertainty Principle in the Emergent, Intermediate and Logamediate Scenarios of the Universe
- Interacting realization of cosmological singularities with variable vacuum energy
- Inaccessible Singularities in Toral Cosmology
- Classifying the behavior of noncanonical quintessence
- New futures for cosmological models
- Reconstruction of DBI-essence dark energy with f(R) gravity and its effect on black hole and wormhole mass accretion
- Interacting Dark Side of Universe Through Generalized Uncertainty Principle
- Is a pole type singularity an alternative to inflation?
- Strength of the singularities, equation of state and asymptotic expansion