Tracking solutions in tachyon cosmology

Abstract

We perform a thorough phase-plane analysis of the flow defined by the equations of motion of a FRW universe filled with a tachyonic fluid plus a barotropic one. The tachyon potential is assumed to be of inverse square form, thus allowing for a two-dimensional autonomous system of equations. The Friedmann constraint, combined with a convenient choice of coordinates, renders the physical state compact. We find the fixed-point solutions, and discuss whether they represent attractors or not. The way the two fluids contribute at late-times to the fractional energy density depends on how fast the barotropic fluid redshifts. If it does it fast enough, the tachyonic fluid takes over at late times, but if the opposite happens, the situation will not be completely dominated by the barotropic fluid; instead there will be a residual non-negligible contribution from the tachyon subject to restrictions coming from nucleosynthesis.

arXiv comment5 pages, 4 figures

References in corpus (38)

• 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 Tracking Solutions
• Exponential potentials and cosmological scaling solutions
• First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Implications for Inflation
• Accelerated expansion of the universe driven by tachyonic matter
• First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Angular Power Spectrum
• First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Tests of Gaussianity
• Scaling solutions in general non-minimal coupling theories
• A classification of scalar field potentials with cosmological scaling solutions
• Cosmological Evolution of the Rolling Tachyon
• Cosmology with tachyon field as dark energy
• Cosmological scaling solutions of non-minimally coupled scalar fields
• Can the clustered dark matter and the smooth dark energy arise from the same scalar field ?
• Power-Law Inflation from the Rolling Tachyon
• Prospects and Problems of Tachyon Matter Cosmology
• Inflation from a Tachyon Fluid?
• Aspects of Tachyonic Inflation with Exponential Potential
• Effective equation of state and energy conditions in phantom/tachyon inflationary cosmology perturbed by quantum effects
• Thoughts on Tachyon Cosmology
• Cosmological dynamics of the tachyon with an inverse power-law potential
• Early-universe constraints on a Primordial Scaling Field
• Assisted Tachyonic Inflation
• Brane cosmology driven by the rolling tachyon
• Cosmological perturbations in a generalized gravity including tachyonic condensation
• Cosmological Constraints on Tachyon Matter
• Enlarged quintessence cosmology
• Implementing Power Law Inflation with Tachyon Rolling on the Brane
• Tachyonic Inflation in the Braneworld Scenario
• Early Quintessence in Light of WMAP
• Slow-roll parameters in braneworld cosmologies
• Scaling Solutions in Robertson-Walker Spacetimes
• Inflationary Attractor from Tachyonic Matter
• Reconstructing the Equation of State of Tachyon
• The stability of cosmological scaling solutions
• On the potentials yielding cosmological scaling solutions
• BBN And CMB Constraints On Dark Energy
• The Tachyon Inflationary Models with Exact Mode Functions

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• Dynamical analysis of anisotropic scalar-field cosmologies for a wide range of potentials
• Cosmological dynamics of tachyonic teleparallel dark energy
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• Reconstruction of general scalar-field dark energy models
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• Tachyonic Quintessential Inflation
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• Low redshift observational constraints on tachyon models of dark energy
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• Dynamics of Tachyon and Phantom Field beyond the Inverse Square Potentials
• Cosmological Implications of 5-dimensional Brans-Dicke Theory
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• Entropy In The Present And Early Universe: New Small Parameters And Dark Energy Problem
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• Gravitational collapse with tachyon field and barotropic fluid
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• Interacting Tachyon: generic cosmological evolution for a tachyon and a scalar field
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