Phantom Cosmologies

Abstract

The dynamics of a minimally coupled scalar field in the expanding universe is discussed with special reference to phantom cosmology. The evolution of the universe with a phantom field vis-a-vis a quintessence field is compared. Phantom cosmologies are found to have two special features i) occurrence of a singularity where the scale factor, the energy density and Ricci curvature scalar diverge to infinity. This singularity occurs at a finite time, depending on w during cosmic evolution, ii) degeneracy in the determination of w(z_m) for a particular transition redshift z_m which seems to impart similar observational properties to corresponding phantom and quintessence models and makes them compatible with the cosmological observations. Constraints over phantom fields are derived using recent WMAP data and the range of $w$ is narrowed down to -1.18 < w < -0.93 with the corresponding value of the deceleration parameter lying in the range - 0.8 < q_0 < -0.52. An observational test, based upon the observations of low redshift galactic clusters, is suggested to discriminate between the quintessence and phantom dark energy.

12 pages, revtex, 3 figures, 1 table, references added

References in corpus (24)

• First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Determination of Cosmological Parameters
• First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Preliminary Maps and Basic Results
• Cosmological parameters from SDSS and WMAP
• Cosmological Constant - the Weight of the Vacuum
• Cosmology and the Fate of Dilatation Symmetry
• Phantom Energy and Cosmic Doomsday
• Can the dark energy equation-of-state parameter w be less than -1?
• Quantum deSitter cosmology and phantom matter
• Exploring the Expanding Universe and Dark Energy using the Statefinder Diagnostic
• Cosmological Dynamics of Phantom Field
• Probing dark energy perturbations: the dark energy equation of state and speed of sound as measured by WMAP
• Constructing Phantom Cosmologies from Standard Scalar Field Universes
• A theoretician's analysis of the supernova data and the limitations in determining the nature of dark energy
• You need not be afraid of phantom energy
• deSitter brane universeinduced by phantom and quantum effects
• Measuring and Understanding the Universe
• Generalized phantom energy
• Nearly Scale-Invariant Spectrum of Adiabatic Fluctuations May be from a Very Slowly Expanding Phase of the Universe
• Phantom with Born-Infield type Lagrangian
• Constraining the dark energy with galaxy clusters X-ray data
• Phantom Field with O(N) Symmetry in Exponential Potential
• Dark Matter and Dark Energy: Summary and Future Directions
• The Strong Energy Condition and the S-Brane Singularity Problem
• Spectral flow of the Dirac spectrum in intersecting vortices

Cited by in corpus (84)

• Dynamics of dark energy
• Dark Energy
• The final state and thermodynamics of dark energy universe
• Quantum effects can render w<-1 on cosmological scales
• Comparison of the Legacy and Gold SnIa Dataset Constraints on Dark Energy Models
• Cosmological parameters from supernova observations: A critical comparison of three data sets
• Reconstructing the universe history, from inflation to acceleration, with phantom and canonical scalar fields
• Coupled dark energy: Towards a general description of the dynamics
• Constraints on linear-negative potentials in quintessence and phantom models from recent supernova data
• The Fate of Bound Systems in Phantom and Quintessence Cosmologies
• The stability of modified gravity models
• The fate of (phantom) dark energy universe with string curvature corrections
• Solar System experiments do not yet veto modified gravity models
• "Expansion" around the vacuum equation of state - sudden future singularities and asymptotic behavior
• Cosmological expansion and local physics
• Crossing the Phantom Divide Barrier with Scalar Tensor Theories
• Dark energy cosmology with generalized linear equation of state
• A viability criterion for modified gravity with an extra force
• Exploring Cosmological Expansion Parametrizations with the Gold SnIa Dataset
• Cosmological Evolution of Interacting Phantom Energy with Dark Matter
• Charged Black Holes in Phantom Cosmology
• Interacting Phantom Energy
• Born-Infeld Phantom Gravastars
• The phase space view of f(R) gravity
• Phantom cosmology with general potentials
• Quintom Cosmology with General Potentials
• Statefinder parameters for quintom dark energy model
• Smooth dynamical (de)-phantomization of a scalar field in simple cosmological models
• Modified gravity and the stability of de Sitter space
• Escaping the Big Rip?
• Internal space structure generalization of the quintom cosmological scenario
• The generalized second law in phantom dominated universes in the presence of black holes
• Dark energy transition between quintessence and phantom regimes - an equation of state analysis
• Dark energy with dark spinors
• CMBR Constraint on a Modified Chaplygin Gas Model
• SO(1,1) dark energy model and the universe transition
• Accretion Processes for General Spherically Symmetric Compact Objects
• Cosmology with decaying tachyon matter
• Large-scale inhomogeneities in modified Chaplygin gas cosmologies
• Braneworld dynamics in Einstein-Gauss-Bonnet gravity
• UV stable, Lorentz-violating dark energy with transient phantom era
• Primordial Black Holes in Phantom Cosmology
• New "Bigs" in cosmology
• Transitioning Universe with hybrid scalar field in Bianchi I space-time
• Dynamical dark energy in the light of DESI 2024 data
• Phantom cosmologies and fermions
• Scalar field and time varying Cosmological constant in $f(R,T)$ gravity for Bianchi type-I Universe
• Extended quintessence, inflation, and stable de Sitter spaces
• The Reconstruction of Constant Jerk Parameter with $f(R,T)$ Gravity
• Accretion onto Some Well-Known Regular Black Holes
• Genesis of Dark Energy: Dark Energy as Consequence of Release and Two-stage Tracking Cosmological Nuclear Energy
• Non-chaotic dynamics in general-relativistic and scalar-tensor cosmology
• Dynamical system analysis of Quintom Dark Energy Model
• Phantom cosmology as a simple model with dynamical complexity
• Vector field and rotational curves in dark galactic halos
• Reconstruction of scalar potentials in two-field cosmological models
• Reconstruction of an Observationally Constrained $f(R,T)$ gravity model
• Will black holes eventually engulf the universe?
• Vacuum fluctuations in a supersymmetric model in FRW spacetime
• Scalar field cosmology in phase space
• Thermodynamics of Spinor Quintom
• Networks of cosmological histories, crossing of the phantom divide line and potentials with cusps
• Phantom universe from CPT symmetric QFT
• Geodesics of McVittie Spacetime with a Phantom Cosmological Background
• Variable G and $\Lambda$: scalar-tensor versus RG-improved cosmology
• Unification of cosmological scalar fields
• Phantom cosmology as a scattering process
• Relic gravitational waves and the generalized second law
• Dynamical age of the universe as a constraint on the parametrization of dark energy equation of state
• The Reconstruction of Constant Jerk Parameter with $f(R,T)$ Gravity in Bianchi-I spacetime
• Asymptotic behavior of Cardassian cosmologies with exponential potentials
• No "big trips" for the universe
• Qualitative analysis and characterization of two cosmologies including scalar fields
• Are we seeing the beginnings of Inflation?
• On Friedmann-Lema\^ıtre-Robertson-Walker cosmologies in non-standard gravity
• Cosmic Evolution with Early and Late Acceleration Inspired by Dual Nature of the Ricci Scalar Curvature
• Black Holes in Accelerated Universe
• Entropy of cosmological black holes and generalized second law in phantom energy-dominated universe
• Non-Singular Bouncing cosmology from Phantom Scalar-Gauss-Bonnet Coupling: Reconstruction with Observational Insights
• The nature of cosmological singularities in isotropic universes and braneworlds
• Fluctuations in the stress energy tensor of spinor fields evolving in general FRW spacetimes
• Kiselev/CFT correspondence and black hole thermodynamics
• The relation between Geometry and Matter in classical and quantum Gravity and Cosmology
• Thermodynamics properties of the dark energy in loop quantum cosmology