Inflation driven by single geometric tachyon with D-brane orbiting around NS5-branes

Abstract

We investigate models in which inflation is driven by a single geometrical tachyon. We assume that the D-brane as a probe brane in the background of NS5-branes has non-zero angular momentum which is shown to play similar role as the number of the scalar fields of the assisted inflation. We demonstrate that the angular momentum corrected effective potential allows to account for the observational constraint on COBE normalization, spectral index $n_S$ and the tensor to scalar ratio of perturbations consistent with WMAP seven years data.

arXiv comment8 pages, minor clarification added, revised version to appear in PLB

References in corpus (74)

• First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Determination of Cosmological Parameters
• Accelerated expansion of the universe driven by tachyonic matter
• Cosmological Evolution of the Rolling Tachyon
• Cosmology with tachyon field as dark energy
• The Inflationary Brane-Antibrane Universe
• Matrix Description of M-theory on $T^5$ and $T^5/Z_2$
• Supersymmetric World-volume Action for Non-BPS D-branes
• T-duality and Actions for Non-BPS D-branes
• Tachyons, Scalar Fields and Cosmology
• Extended tachyon field, Chaplygin gas and solvable k-essence cosmologies
• Tachyon couplings on non-BPS D-branes and Dirac-Born-Infeld action
• Power-Law Inflation from the Rolling Tachyon
• Assisted inflation via tachyon condensation
• Inflation from a Tachyon Fluid?
• Proposal for non-BPS D-brane action
• What is needed of a tachyon if it is to be the dark energy?
• A brief review of "little string theories"
• Matrix Description of M-theory on $T^4$ and $T^5$
• Coupled dark energy: Towards a general description of the dynamics
• 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
• Tachyon Effective Actions In Open String Theory
• Problems with Tachyon Inflation
• Assisted Tachyonic Inflation
• A unified approach to scaling solutions in a general cosmological background
• Brane cosmology driven by the rolling tachyon
• Tracking solutions in tachyon cosmology
• Born-Infeld Quantum Condensate as Dark Energy in the Universe
• On the Cosmological Relevance of the Tachyon
• Cosmological Constraints on Tachyon Matter
• Caustics in Tachyon Matter and Other Born-Infeld Scalars
• Implementing Power Law Inflation with Tachyon Rolling on the Brane
• Brane-Antibrane Inflation in Orbifold and Orientifold Models
• Tachyon inflation: tests and comparison with single scalar field inflation
• Little String Theory at a TeV
• Reheating from Tachyon Condensation
• Tachyonic Inflation in the Braneworld Scenario
• Accelerating Cosmologies from Exponential Potentials
• Inflationary Attractor from Tachyonic Matter
• Cosmology from Rolling Massive Scalar Field on the anti-D3 Brane of de Sitter Vacua
• Observational constraints on patch inflation in noncommutative spacetime
• Reconstructing the Equation of State of Tachyon
• D-Branes in the Background of NS Fivebranes
• Rolling Tachyons in String Cosmology
• Hybrid Inflation and Brane-Antibrane System
• On-shell S-matrix and tachyonic effective actions
• Slowly varying tachyon and tachyon potential
• Inhomogeneous tachyon decay, light-cone structure and D-brane network problem in tachyon cosmology
• Cosmology with decaying tachyon matter
• A Note on Inflation with Tachyon Rolling on the Gauss-Bonnet Brane
• Does the Tachyon Matter?
• Non-tachyonic brane inflation
• D-brane Dynamics in RR Deformation of NS5-branes Background and Tachyon Cosmology
• Constraining Born-Infeld models of dark energy with CMB anisotropies
• Non-minimally Coupled Tachyonic Inflation in Warped String Background
• Noncommutative models in patch cosmology
• Inhomogeneous Fragmentation of the Rolling Tachyon
• Generation of electromagnetic fields in string cosmology with a massive scalar field on the anti D-brane
• A note on the structural stability of tachyonic inflation
• Constraints on Dirac-Born-Infeld type dark energy models from varying alpha
• Extended Born-Infeld Dynamics and Cosmology
• D-Brane Dynamics and NS5 Rings
• Tachyonic Inflation in a Warped String Background
• Dark energy and supermassive black holes
• Formation of caustics in Dirac-Born-Infeld type scalar field systems
• Tachyon Defect Formation and Reheating in Brane-Antibrane Inflation
• Assisted Inflation from Geometric Tachyon
• The N-Tachyon Assisted Inflation
• A comment on $p$-branes of ($p+3$)$\mathrm{d}$ string theory
• NS-branes in 5d brane world models
• Spinflation from Geometric Tachyon
• D-brane orbiting NS5-branes

Cited by in corpus (2)

• Encyclopaedia Inflationaris
• Nearly Starobinsky inflation from modified gravity