Prospects and Problems of Tachyon Matter Cosmology

Abstract

We consider the evolution of FRW cosmological models and linear perturbations of tachyon matter rolling towards a minimum of its potential. The tachyon coupled to gravity is described by an effective 4d field theory of string theory tachyon. In the model where a tachyon potential $V(T)$ has a quadratic minimum at finite value of the tachyon field $T_0$ and $V(T_0)=0$, the tachyon condensate oscillates around its minimum with a decreasing amplitude. It is shown that its effective equation of state is $p=-\epsilon /3$. However, linear inhomogeneous tachyon fluctuations coupled to the oscillating background condensate are exponentially unstable due to the effect of parametric resonance. In another interesting model, where tachyon potential exponentially approaches zero at infinity of $T$, rolling tachyon condensate in an expanding universe behaves as pressureless fluid. Its linear fluctuations coupled with small metric perturbations evolve similar to these in the pressureless fluid. However, this linear stage changes to a strongly non-linear one very early, so that the usual quasi-linear stage observed at sufficiently large scales in the present Universe may not be realized in the absence of the usual particle-like cold dark matter.

12 pages, 3 figures

References in corpus (13)

• An alternative to quintessence
• Towards the Theory of Reheating After Inflation
• k-Inflation
• Reheating after Inflation
• Rolling Tachyon
• Perturbations in k-inflation
• Cosmological Evolution of the Rolling Tachyon
• Dynamics of Symmetry Breaking and Tachyonic Preheating
• Some Exact Results on Tachyon Condensation in String Field Theory
• On Exact Tachyon Potential in Open String Field Theory
• Brane cosmology driven by the rolling tachyon
• Current constraints on the dark energy equation of state
• Sine-Gordon Parametric Resonance

Cited by in corpus (212)

• Dynamics of dark energy
• DBI in the Sky
• Exploring the Expanding Universe and Dark Energy using the Statefinder Diagnostic
• Reconstructing Dark Energy
• Cosmology with tachyon field as dark energy
• Dark Matter and Dark Energy
• Cosmological Dynamics of Phantom Field
• WMAP constraints on low redshift evolution of dark energy
• Tachyons, Scalar Fields and Cosmology
• Extended tachyon field, Chaplygin gas and solvable k-essence cosmologies
• Dark Energy and Gravity
• Cosmological parameters from supernova observations: A critical comparison of three data sets
• WMAP and the Generalized Chaplygin Gas
• 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?
• Accelerated Cosmological Models in Ricci squared Gravity
• Dynamics with Infinitely Many Time Derivatives and Rolling Tachyons
• Cosmological dynamics of the tachyon with an inverse power-law potential
• New generalized Chaplygin gas as a scheme for unification of dark energy and dark matter
• A unified approach to scaling solutions in a general cosmological background
• Cosmological Effects of a Class of Fluid Dark Energy Models
• Instability of holographic dark energy models
• Holographic tachyon model of dark energy
• Accelerated Universe from Modified Chaplygin Gas and Tachyonic Fluid
• Time Evolution in Open String Theory
• Tracking solutions in tachyon cosmology
• Accelerated Cosmological Models in First-Order Non-Linear Gravity
• Decay of Unstable D-branes with Electric Field
• Route to nonlocal cosmology
• Tachyon inflation: tests and comparison with single scalar field inflation
• Phantom with Born-Infield type Lagrangian
• Tachyon Condensates, Carrollian Contraction of Lorentz Group, and Fundamental Strings
• Interacting tachyon dark energy in non-flat universe
• Reheating from Tachyon Condensation
• Tachyonic Inflation in the Braneworld Scenario
• Curvature force and dark energy
• Tachyon dark energy models: dynamics and constraints
• Smooth dynamical (de)-phantomization of a scalar field in simple cosmological models
• Supergravity brane worlds and tachyon potentials
• Escaping the Big Rip?
• Slow-roll parameters in braneworld cosmologies
• Rolling Tachyon with Electric and Magnetic Fields -- T-duality approach -----
• Rolling Tachyon in Brane World Cosmology from Superstring Field Theory
• Inflationary Attractor from Tachyonic Matter
• Stability properties of some perfect fluid cosmological models
• Cosmology from Rolling Massive Scalar Field on the anti-D3 Brane of de Sitter Vacua
• SD-brane gravity fields and rolling tachyons
• A Viable Cosmology with a Scalar Field Coupled to the Trace of the Stress-Tensor
• Time Lumps in Nonlocal Stringy Models and Cosmological Applications
• Observational constraints on patch inflation in noncommutative spacetime
• D-branes in Standard Model building, Gravity and Cosmology
• Gamma-ray bursts as dark energy-matter probes in the context of the generalized Chaplygin gas model
• Rolling Tachyons in String Cosmology
• Hybrid Inflation and Brane-Antibrane System
• Inhomogeneous tachyon decay, light-cone structure and D-brane network problem in tachyon cosmology
• Tachyon Dynamics and the Effective Action Approximation
• Exact Analysis of Scaling and Dominant Attractors Beyond the Exponential Potential
• A Note on Inflation with Tachyon Rolling on the Gauss-Bonnet Brane
• A two measure model of dark energy and dark matter
• Cosmological tachyon condensation
• Inflation and dark energy arising from geometrical tachyons
• Quantum cosmology and late-time singularities
• Tachyon Kinks
• Non-tachyonic brane inflation
• Constant-roll tachyon inflation and observational constraints
• Constraining Born-Infeld models of dark energy with CMB anisotropies
• Statefinder Diagnostic for Dilaton Dark Energy
• Gravitational Approach to Tachyon Matter
• Non-minimally Coupled Tachyonic Inflation in Warped String Background
• Electromagnetic String Fluid in Rolling Tachyon
• Scalar Field Dark Energy Perturbations and their Scale Dependence
• Caustic Formation in Tachyon Effective Field Theories
• Noncommutative models in patch cosmology
• Aspects of Scalar Field Dynamics in Gauss-Bonnet Brane Worlds
• Stringy Dark Energy Model with Cold Dark Matter
• Unified Superfluid Dark Sector
• Coupled Quintessence and Phantom Based On a Dilaton
• Inflation from Tachyon Condensation, Large N Effects
• Tachyon cosmology, supernovae data and the Big Brake singularity
• Can cosmological observations uniquely determine the nature of dark energy ?
• Constraints on Dirac-Born-Infeld type dark energy models from varying alpha
• Reconstructing K-essence
• A singularity problem for interacting massive vectors
• Fine Tuning Free Paradigm of Two Measures Theory: K-Essence, Absence of Initial Singularity of the Curvature and Inflation with Graceful Exit to Zero Cosmological Constant State
• Soft singularity crossing and transformation of matter properties
• Scalar models for the generalized Chaplygin gas and the structure formation constraints
• Recovering P(X) from a canonical complex field
• Dynamical Evolution of Interacting Modified Chaplygin Gas
• Jeans type instability of a complex self-interacting scalar field in general relativity
• On higher derivative corrections to Wess-Zumino and Tachyonic actions in type II super string theory
• Inflation from Geometrical Tachyons
• Exact solutions for the interacting tachyonic-dark matter system
• Hamilton-Jacobi Formalism for Tachyon Inflation
• Study Of Tachyon Dynamics For Broad Classes of Potentials
• Gauge Fields and Scalars in Rolling Tachyon Backgrounds
• D-brane Dynamics in the c=1 Matrix Model
• New tracker models of dark energy
• COSMOS-$e^{\prime }$-GTachyon from String Theory
• Tachyonic Inflation in a Warped String Background
• Off-shell extension of S-matrix elements and tachyonic effective actions
• Why Does Gravity Ignore the Vacuum Energy?
• Some Impacts of Lorentz Violation on Cosmology
• Comparison between the Logotropic and $\Lambda$CDM models at the cosmological scale
• The reconstruction of tachyon inflationary potentials
• Inflation from D3-brane motion in the background of D5-branes
• Will the tachyonic Universe survive the Big Brake?
• Classical and quantum cosmology of Born-Infeld type models
• Second-Order Corrections to the Power Spectrum in the Slow-Roll Expansion with a Time-Dependent Sound Speed
• Conformally Coupled Tachyonic Dark Energy
• Cosmological Evolution of a Tachyon-Quintom Model of Dark Energy
• Inhomogeneous cosmologies with tachyonic dust as dark matter
• Warm-tachyon Gauss-Bonnet inflation in the light of Planck 2015 data
• Tachyon Field in Intermediate Inflation on the Brane
• Dark Energy: A Unifying View
• Understanding the origin of CMB constraints on Dark Energy
• Remarks on the Generalized Chaplygin Gas
• Reconstruction of scalar potentials in two-field cosmological models
• First-order formalism for dark energy and dust
• S-matrix elements and off-shell tachyon action with non-abelian gauge symmetry
• Classical and quantum Big Brake cosmology for scalar field and tachyonic models
• Dilaton Coupled Quintessence Model in the $\omega -{\omega }^{\prime }$ Plane
• Networks of cosmological histories, crossing of the phantom divide line and potentials with cusps
• Born-Infeld Type Phantom Model in the $\omega -{\omega }^{\prime }$ Plane
• Dark energy and supermassive black holes
• Geometrical diagnostic for purely kinetic k-essence dark energy
• Reheating constraints on Tachyon Inflation
• The gravitating perfect fluid-scalar field equations: quintessence and tachyonic
• Field Theories and Fluids for an Interacting Dark Sector
• Holographic Dark Energy Model and Scalar-Tensor Theories
• Formation of caustics in Dirac-Born-Infeld type scalar field systems
• A Two-field Dilaton Model of Dark Energy
• The Schrödinger Wave Functional and S-branes
• Gravitational, shear and matter waves in Kantowski-Sachs cosmologies
• Constraints on the generalized tachyon field models from latest observational data
• Evolution of perturbations in distinct classes of canonical scalar field models of dark energy
• Power spectrum in the Chaplygin gas model: tachyonic, fluid and scalar field representations
• Lagrangian reconstruction of Barrow holographic dark energy in interacting tachyon model
• Cosmological Constraints on the DGP braneworld model with Gamma-ray bursts
• Tachyonic open inflationary universes
• Gravitational collapse with tachyon field and barotropic fluid
• Dynamics of generalized tachyon field
• Brane tachyon dynamics
• The Mass, Normalization and Late Time behavior of the Tachyon Field
• Tachyon inflation in the holographic braneworld
• Tachyon inflation in an AdS braneworld with back-reaction
• Combined cosmological tests of a bivalent tachyonic dark energy scalar field model
• $Om$ Diagnostic for Dilaton Dark Energy
• Interacting Tachyon: generic cosmological evolution for a tachyon and a scalar field
• Acoustics of tachyon Fermi gas
• Constraints on tachyon inflationary models with an AdS/CFT correspondence
• A Quintessentially Geometric Model
• Noether Symmetry Approach for Dirac-Born-Infeld Cosmology
• Approach to exact solutions of cosmological perturbations: Tachyon field inflation
• Gravitational Waves in Locally Rotationally Symmetric (LRS) Class II Cosmologies
• Gravitational Coupling and Dynamical Reduction of The Cosmological Constant
• Cosmology and perturbations in tachyonic massive gravity
• Tachyonic potential in Bianchi type-I universe
• Tachyon model of Tsallis holographic dark energy
• Stability of a tachyon braneworld
• Scalar field potentials for closed and open cosmological models
• Particle creation and reheating in a braneworld inflationary scenario
• Brane-Antibrane Systems at Finite Temperature and Phase Transition near the Hagedorn Temperature
• Tachyon field in loop quantum cosmology: An example of traversable singularity
• Holographic cosmology and tachyon inflation
• Generalized unimodular gravity as a form of k-essence
• Perturbed dark energy: classical scalar field versus tachyon
• Primordial Gravitational Waves Spectrum in the Coupled-Scalar-Tachyon Bounce Universe
• Observational Status of Tachyon Natural Inflation and Reheating
• Chaplygin Gravitodynamics
• Dynamics of tachyon field with an inverse square potential in loop quantum cosmology
• Cosmological constraints on superconducting dark energy models
• Deforming tachyon kinks and tachyon potentials
• Mirage cosmology with an unstable probe D3-brane
• Constant-roll Inflation in Brane Induced Gravity Cosmology
• Dynamical System Analysis of Brane Induced Gravity with Tachyon Field
• A note on the singularity theorem for supergravity SD-branes
• Cosmological models based on a complex scalar field with a power-law potential associated with a polytropic equation of state
• Tachyon field non-minimally coupled to massive neutrino matter
• Interacting Chaplygin gas revisited
• Inhomogeneous tachyon condensation
• The energy-momentum tensor of perturbed tachyon matter
• Singularity crossing, transformation of matter properties and the problem of parametrization in field theories
• Finite Temperature Systems of Brane-Antibrane on a Torus
• Regular Friedmann Universes and Matter Transformations
• Thermodynamics of Modified Chaplygin-Jacobi Gas and Modified Chaplygin-Abel Gas: Stability Analysis and Observational Constraints
• D-Brane Effective Actions and Particle Production near the Beginning of the Tachyon Condensation
• Evolution of Dark Energy Perturbations for Slotheon Field and Power Spectrum
• Future soft singularities, Born-Infeld-like fields and particles
• Cosmological evolution of a D-brane
• Curvature Coupling and Accelerated Expansion of the Universe
• Twinlike models for parametrized dark energy
• Warm constant-roll inflation in brane-world cosmology
• Potentials of Coupled Quintessence Based on a Dilaton
• Bouncing universe and non-BPS branes
• Chaplygin Gas of Tachyon Nature Imposed by Symmetry and Constrained via H(z) Data
• Tachyon cosmology with non-vanishing minimum potential: a unified model
• Mirage Cosmology of U(1) Gauge Field on Unstable D3 Brane Universe
• Large-scale structure formation in cosmology with classical and tachyonic scalar fields
• A scaling invariance of the perturbations in $k$-inflation models
• Chaplygin electron gas model
• Particle Production in Tachyon Condensation
• Primordial perturbations and inflation in a holography inspired Gauss-Bonnet cosmology
• Again About Singularity Crossing In Gravitation And Cosmology
• An exotic k-essence interpretation of interactive cosmological models
• Kinetic coupled tachyon: A dynamical system analysis
• Particle Production on Half S-brane
• Covariant holography of a tachyonic accelerating universe
• Primordial black hole formation in k-inflation models
• Conformally flat travelling plane wave solutions of Einstein equations
• Constraining tachyonic inflationary β-exponential model with Continuous Spontaneous Localization collapse scheme
• Criticality and Big Brake singularities in the tachyonic evolutions of closed Friedmann universes with cold dark matter
• Caustic formation in DBI models: Wave propagation on planar domain walls