Constraints on oscillating dark energy models

Abstract

The oscillating scenario of route to Lambda was recently proposed by us arXiv:0704.1651 as an alternative to a cosmological constant in a explanation of the current accelerating universe. In this scenario phantom scalar field conformally coupled to gravity drives the accelerating phase of the universe. In our model $\Lambda$CDM appears as a global attractor in the phase space. In this paper we investigate observational constraints on this scenario from recent measurements of distant supernovae type Ia, CMB R shift, BAO and $H(z)$ observational data. The Bayesian methods of model selection are used in comparison the model with concordance $\Lambda$CDM one as well as with model with dynamical dark energy parametrised by linear form. We conclude that $\Lambda$CDM is favoured over FRW model with dynamical oscillating dark energy. Our analysis also demonstrate that FRW model with oscillating dark energy is favoured over FRW model with decaying dark energy parametrised in linear way.

revtex4, 7 pages, 3 figures; (v2) 12 pages, 11 figures; Phys. Lett. B (in press)

References in corpus (23)

• Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant
• Wilkinson Microwave Anisotropy Probe (WMAP) Three Year Results: Implications for Cosmology
• Dynamics of dark energy
• Detection of the Baryon Acoustic Peak in the Large-Scale Correlation Function of SDSS Luminous Red Galaxies
• Cosmological parameters from SDSS and WMAP
• The Supernova Legacy Survey: Measurement of Omega_M, Omega_Lambda and w from the First Year Data Set
• The 2dF Galaxy Redshift Survey: Power-spectrum analysis of the final dataset and cosmological implications
• New Hubble Space Telescope Discoveries of Type Ia Supernovae at z > 1: Narrowing Constraints on the Early Behavior of Dark Energy
• Constraints on the redshift dependence of the dark energy potential
• Observational Constraints on the Nature of the Dark Energy: First Cosmological Results from the ESSENCE Supernova Survey
• Scrutinizing Exotic Cosmological Models Using ESSENCE Supernova Data Combined with Other Cosmological Probes
• Robust Dark Energy Constraints from Supernovae, Galaxy Clustering, and Three-Year Wilkinson Microwave Anisotropy Probe Observations
• Cosmological Constraints from Hubble Parameter versus Redshift Data
• Parametrization of Quintessence and Its Potential
• Observational $H(z)$ Data and Cosmological Models
• Top ten accelerating cosmological models
• Probing for dynamics of dark energy and curvature of universe with latest cosmological observations
• No-go theorem for k-essence dark energy
• A crucial ingredient of inflation
• Measuring deviations from a cosmological constant: a field-space parameterization
• Reduction of Cosmological Data for the Detection of Time-varying Dark Energy Density
• What Can Gamma Ray Bursts Teach Us About Dark Energy?
• Route to Lambda in conformally coupled phantom cosmology

Cited by in corpus (14)

• Modified Gravity Theories on a Nutshell: Inflation, Bounce and Late-time Evolution
• Cosmic Chronometers: Constraining the Equation of State of Dark Energy. I: H(z) Measurements
• Model-independent reconstruction of the Interacting Dark Energy Kernel: Binned and Gaussian process
• Structure formation in cosmologies with oscillating dark energy
• Evolution of Oscillating Scalar Fields as Dark Energy
• Dynamical dark energy confronted with multiple CMB missions
• Imprints of an extended Chevallier-Polarski-Linder parametrization on the large scale of our universe
• Fourier-series expansion of the dark-energy equation of state
• Testing an oscillatory behavior of dark energy
• Observational constraints on the oscillating dark energy cosmologies
• Fitting oscillating string gas cosmology to supernova data
• From model dynamics to oscillating dark energy parameterisation
• The complementarity of the redshift drift
• Three steps to accelerated expansion