"Phantom" Inflation in Warped Compactification

Abstract

In this paper, in a class of warped compactifications with the brane/flux annihilation, we find that the inflation may be driven by a flat direction identified as that along the number p of anti D3-branes located at the tip of the Klebanov-Strassler throat. The spectrum of adiabatic perturbation generated during inflation is nearly scale invariant, which may be obtained by using the results shown in the phantom inflation, since in a four-dimension effective description the evolution of energy density along the $p$ direction is slowly increasing.

5 pages, 2 figures, some arguments on the reliability of our resulits added, ref. added, to publish in PRD, matched to published version

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Cited by in corpus (13)

• CMB anomalies from an inflationary model in string theory
• Preventing eternality in phantom inflation
• Reconstruction of a Nonminimal Coupling Theory with Scale-invariant Power Spectrum
• Phantom Inflation in Little Rip
• Observational constraints on phantom power-law cosmology
• Probing the primordial universe with gravitational waves detectors
• Radion induced inflation on non-flat brane and modulus stabilization
• Phantom Inflation with A Steplike Potential
• Reconstruction of f(R) models with Scale-invariant Power Spectrum
• Curvature and Entropy Perturbations in Generalized Gravity
• Cosmological perturbations in transient phantom inflation scenarios
• The nature of cosmological singularities in isotropic universes and braneworlds
• Confronting phantom inflation with Planck data