Low redshift observational constraints on tachyon models of dark energy

Abstract

The background evolution of an accelerated, dark energy dominated universe is aptly described by non-canonical tachyon scalar field models. The accelerated expansion of the universe is determined by the choice of a suitable scalar field potential; in the case of a tachyon field, a 'runaway' potential. In the absence of a fundamental theory, dark energy properties are studied in a phenomenological approach. This includes determining the model parameters using observations and to probe the allowed deviation from the cosmological constant model. In this paper, we present constraints on tachyon scalar field parameters from low redshift data for two different scalar field potentials. These scalar field potentials have been crucial in tachyon dark energy studies. The datasets considered in this paper include the supernova type Ia data, independent measurements of the Hubble parameter and the Baryon Acoustic Oscillation data. In this paper, we present constraints on tachyon field parameters using these observations and their combination. A combination of the datasets indicates that those model parameters are preferred which emulate the cosmological constant model. The initial value of the scalar field, in the unit of the Hubble constant, is bounded from below and does not require fine-tuning at larger values.

arXiv comment20 pages, 9 figures, References added, Minor modifications, Published in JCAP

References in corpus (85)

• Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant
• Measurements of Omega and Lambda from 42 High-Redshift Supernovae
• Planck 2015 results. XIII. Cosmological parameters
• Detection of the Baryon Acoustic Peak in the Large-Scale Correlation Function of SDSS Luminous Red Galaxies
• The clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: cosmological analysis of the DR12 galaxy sample
• Quintessence, Cosmic Coincidence, and the Cosmological Constant
• The Cosmological Constant
• Exploring the Expansion History of the Universe
• Accelerating Universes with Scaling Dark Matter
• The Supernova Legacy Survey: Measurement of Omega_M, Omega_Lambda and w from the First Year Data Set
• Improved cosmological constraints from a joint analysis of the SDSS-II and SNLS supernova samples
• The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: Baryon Acoustic Oscillations in the Data Release 10 and 11 galaxy samples
• Planck 2013 results. I. Overview of products and scientific results
• Cosmological Results from High-z Supernovae
• The Hubble Space Telescope Cluster Supernova Survey: V. Improving the Dark Energy Constraints Above z>1 and Building an Early-Type-Hosted Supernova Sample
• Measurements of the Cosmological Parameters Omega and Lambda from the First 7 Supernovae at z >= 0.35
• Exponential potentials and cosmological scaling solutions
• Rolling Tachyon
• Tachyon Matter
• The WiggleZ Dark Energy Survey: mapping the distance-redshift relation with baryon acoustic oscillations
• Accelerated expansion of the universe driven by tachyonic matter
• The WiggleZ Dark Energy Survey: Joint measurements of the expansion and growth history at z < 1
• Baryon Acoustic Oscillations in the Lyα forest of BOSS DR11 quasars
• Supernova Limits on the Cosmic Equation of State
• Probing Dark Energy with Baryonic Acoustic Oscillations from Future Large Galaxy Redshift Surveys
• Cosmological implications of baryon acoustic oscillation (BAO) measurements
• Baryon Acoustic Oscillations in the Ly-α forest of BOSS quasars
• Field Theory of Tachyon Matter
• Cosmology with tachyon field as dark energy
• Ghost Inflation
• Structure formation with a self-tuning scalar field
• Probing the dark energy: methods and strategies
• Can the clustered dark matter and the smooth dark energy arise from the same scalar field ?
• 23 High Redshift Supernovae from the IfA Deep Survey: Doubling the SN Sample at z>0.7
• Hubble parameter measurement constraints on the cosmological deceleration-acceleration transition redshift
• Hubble parameter measurement constraints on the redshift of the deceleration-acceleration transition, dynamical dark energy, and space curvature
• Modeling the Anisotropic Two-Point Galaxy Correlation Function on Small Scales and Improved Measurements of H(z), D_A(z), and f(z)sigma_8(z) from the Sloan Digital Sky Survey DR7 Luminous Red Galaxies
• Power-Law Inflation from the Rolling Tachyon
• A Further Analysis of a Cosmological Model of Quintessence and Scalar Dark Matter
• The shape of the SDSS DR5 galaxy power spectrum
• Inflation from a Tachyon Fluid?
• Constraining the equation of state of the Universe from Distant Type Ia Supernovae and Cosmic Microwave Background Anisotropies
• New dark energy constraints from supernovae, microwave background and galaxy clustering
• Observational constraints on low redshift evolution of dark energy: How consistent are different observations?
• What is needed of a tachyon if it is to be the dark energy?
• Models of dynamical supersymmetry breaking and quintessence
• Thawing quintessence with a nearly flat potential
• The Dynamics of Quintessence, The Quintessence of Dynamics
• Cosmological constraints on the dark energy equation of state and its evolution
• Tracking solutions in tachyon cosmology
• Cosmological Constraints from Hubble Parameter versus Redshift Data
• Quintessence and Gravitational Waves
• Primordial features due to a step in the inflaton potential
• Distance Priors from Planck and Dark Energy Constraints from Current Data
• Tachyon dark energy models: dynamics and constraints
• Hubble parameter measurement constraints on dark energy
• Quintessential Enhancement of Dark Matter Abundance
• Observational constraints on variable equation of state parameters of dark matter and dark energy after Planck
• Dynamical behavior of generic quintessence potentials: constraints on key dark energy observables
• Dark energy equation of state parameter and its variation at low redshifts
• On non-perturbative corrections to the Kahler potential
• The Clustering of Galaxies in the Completed SDSS-III Baryon Oscillation Spectroscopic Survey: single-probe measurements from DR12 galaxy clustering -- towards an accurate model
• Hubble parameter data constraints on dark energy
• Constant-roll tachyon inflation and observational constraints
• An improved measurement of baryon acoustic oscillations from the correlation function of galaxy clusters at $z\sim 0.3$
• Latest astronomical constraints on some nonlinear parametric dark energy models
• Cosmic equation of state from combined angular diameter distances: Does the tension with luminosity distances exist?
• The Rise-Time of Normal and Subluminous Type Ia Supernovae
• Reconstructing the dark energy potential
• Observer dependence of bubble nucleation and Schwinger pair production
• Quintessence Restrictions on Negative Power and Condensate Potentials
• The Evolution of Inverse Power Law Quintessence at Low Redshift
• Constraints on the dark energy equation of state from the separation of CMB peaks and the evolution of alpha
• Slow-roll freezing quintessence
• The reconstruction of tachyon inflationary potentials
• Dynamics of three-form dark energy with dark matter couplings
• Inhomogeneous cosmologies with tachyonic dust as dark matter
• Tachyon inflation with steep potentials
• Constraining Thawing Quintessence
• Tachyon inflation in the Large-$N$ formalism
• Tachyonic dark matter
• Theoretical and observational constraints on Tachyon Inflation
• Matrix string theory and the Myers effect
• String-Loop Corrected Magnetic Black Holes
• On possible tachyonic state of neutrino dark matter

Cited by in corpus (36)

• Baryon acoustic oscillation, Hubble parameter, and angular size measurement constraints on the Hubble constant, dark energy dynamics, and spatial curvature
• Using Pantheon and DES supernova, baryon acoustic oscillation, and Hubble parameter data to constrain the Hubble constant, dark energy dynamics, and spatial curvature
• Using quasar X-ray and UV flux measurements to constrain cosmological model parameters
• Do gamma-ray burst measurements provide a useful test of cosmological models?
• Determining the range of validity of quasar X-ray and UV flux measurements for constraining cosmological model parameters
• Quasar X-ray and UV flux, baryon acoustic oscillation, and Hubble parameter measurement constraints on cosmological model parameters
• Standardizing Platinum Dainotti-correlated gamma-ray bursts, and using them with standardized Amati-correlated gamma-ray bursts to constrain cosmological model parameters
• Constraints on cosmological parameters from gamma-ray burst peak photon energy and bolometric fluence measurements and other data
• Standardizing Dainotti-correlated gamma-ray bursts, and using them with standardized Amati-correlated gamma-ray bursts to constrain cosmological model parameters
• Using SPTpol, Planck 2015, and non-CMB data to constrain tilted spatially-flat and untilted non-flat $\Lambda$CDM, XCDM, and $\varphi$CDM dark energy inflation cosmologies
• Do quasar X-ray and UV flux measurements provide a useful test of cosmological models?
• Cosmological constraints from HII starburst galaxy apparent magnitude and other cosmological measurements
• $H_0=69.8\pm 1.3$ $\mathrm{km}{\mathrm{s}}^{-1}\mathrm{Mp}{\mathrm{c}}^{-1}$, ${\Omega }_{m0}=0.288\pm 0.017$, and other constraints from lower-redshift, non-CMB, expansion-rate data
• Cosmological constraints from higher-redshift gamma-ray burst, HII starburst galaxy, and quasar (and other) data
• Gamma-ray burst data strongly favor the three-parameter fundamental plane (Dainotti) correlation relation over the two-parameter one
• Standardizing reverberation-measured C IV time-lag quasars, and using them with standardized Mg II quasars to constrain cosmological parameters
• Cosmological constraints from HII starburst galaxy, quasar angular size, and other measurements
• Quasar UV/X-ray relation luminosity distances are shorter than reverberation-measured radius-luminosity relation luminosity distances
• Current data are consistent with flat spatial hypersurfaces in the $\Lambda$CDM cosmological model but favor more lensing than the model predicts
• Gaussian Processes Reconstruction of the Dark Energy Potential
• Do reverberation-measured H$\beta$ quasars provide a useful test of cosmology?
• Consistency study of high- and low-accreting Mg ii quasars: No significant effect of the Fe ii to Mg ii flux ratio on the radius-luminosity relation dispersion
• Effect of extinction on quasar luminosity distances determined from UV and X-ray flux measurements
• Reconstruction of late-time cosmology using Principal Component Analysis
• First study of reionization in tilted flat and untilted non-flat dynamical dark energy inflation models
• Effects of heterogeneous data sets and time-lag measurement techniques on cosmological parameter constraints from MgII and CIV reverberation-mapped quasar data
• Testing the standardizability of, and deriving cosmological constraints from, a new Amati-correlated gamma-ray burst data compilation
• Perturbations in Tachyon Dark Energy and their Effect on Matter Clustering
• Low- and high-redshift H II starburst galaxies obey different luminosity-velocity dispersion relations
• Tachyonic vs Quintessence dark energy: linear perturbations and CMB data
• Non-linear spherical collapse in tachyon models, and a comparison of collapse in tachyon and quintessence models of dark energy
• Tilted non-spatially-flat inflation
• Testing the consistency of new Amati-correlated gamma-ray burst dataset cosmological constraints with those from better-established cosmological data
• Standardizing reverberation-measured Mg II time-lag quasars, by using the radius-luminosity relation, and constraining cosmological model parameters
• Inference of cosmological models with principal component analysis
• Perturbations In Some Dark Energy Models