Constant-roll inflation with tachyon field in the holographic braneworld

Abstract

We study inflation driven by the tachyon field in the holographic braneworld by assuming the second slow-roll parameter $\eta$ is constant. The parameter $\eta$ can be either defined by the tachyon scalar field and the Hubble parameter or by the Hubble parameter only. By assuming a constant $\eta$, we derive and numerically solve a differential equation for the Hubble expansion rate. We calculate numerically the scalar spectral index and the tensor-to-scalar ratio. We confront the results with the observational data and find some constraints on the free model parameters. The swampland conjectures are discussed in the context of the constant-roll inflation, with some accent on the holographic model.

References in corpus (48)

• A Large Mass Hierarchy from a Small Extra Dimension
• An Alternative to Compactification
• Planck 2018 results. X. Constraints on inflation
• Towards the Theory of Reheating After Inflation
• Reheating after Inflation
• Holographic Reconstruction of Spacetime and Renormalization in the AdS/CFT Correspondence
• Rolling Tachyon
• Perturbations in k-inflation
• Inflation Dynamics and Reheating
• Universe Reheating after Inflation
• Reconstructing the Inflaton Potential --- an Overview
• Brane-world gravity
• Warm Inflation
• Inflation from a Tachyon Fluid?
• Inflation with a constant rate of roll
• Thermal Properties of an Inflationary Universe
• Problems with Tachyon Inflation
• Cosmological perturbations in a generalized gravity including tachyonic condensation
• The zoo plot meets the swampland: mutual (in)consistency of single-field inflation, string conjectures, and cosmological data
• Tachyon inflation: tests and comparison with single scalar field inflation
• A note on Inflation and the Swampland
• Reheating from Tachyon Condensation
• Constant-roll Inflation in $F(R)$ Gravity
• On the constant-roll inflation
• Tachyon warm inflationary universe models
• Cosmology from an AdS Schwarzschild black hole via holography
• Systematics of Constant Roll Inflation
• Constant-roll tachyon inflation and observational constraints
• Chaotic inflation on the brane and the Swampland Criteria
• Tachyon constant-roll inflation
• Brane Constant-roll Inflation
• Constant-roll $k$-Inflation Dynamics
• Randall-Sundrum versus holographic cosmology
• Inflationary Dynamics and Swampland Criteria for Modified Gauss-Bonnet Gravity Compatible with GW170817
• Warm Tachyon Inflation and Swampland Criteria
• Holographic realization of constant roll inflation and dark energy: An unified scenario
• Constant-roll inflation in the generalized SU(2) Proca theory
• Consistency of the tachyon warm inflationary universe models
• Cosmological perturbations in warm-tachyon inflationary universe model with viscous pressure on the brane
• Tachyon warm inflationary universe model in the weak dissipative regime
• Anisotropic constant-roll inflation for the Dirac-Born-Infeld model
• Tachyon inflation in the holographic braneworld
• Tachyon inflation in an AdS braneworld with back-reaction
• Swampland Criteria and Constraints on Inflation in a $f(R,T)$ Gravity Theory
• Particle creation and reheating in a braneworld inflationary scenario
• Primordial perturbations and inflation in holographic cosmology
• Geometric Tachyon and Warm Inflation
• Numerical Calculation of Hubble Hierarchy Parameters and Observational Parameters of Inflation

Cited by in corpus (1)

• Hitchhiker's Guide to the Swampland: The Cosmologist's Handbook to the string-theoretical Swampland Programme