DBI Galileon inflation in background SUGRA

Abstract

We introduce a model of potential driven DBI Galileon inflation in background N=1,D=4 SUGRA. Starting from D4-$\overline{D4}$ brane-antibrane in the bulk N=2,D=5 SUGRA including quadratic Gauss-Bonnet corrections, we derive an effective N=1,D=4 SUGRA by dimensional reduction, that results in a Coleman-Weinberg type Galileon potential. We employ this potential in modeling inflation and in subsequent study of primordial quantum fluctuations for scalar and tensor modes. Further, we estimate the major observable parameters in both de Sitter (DS) and beyond de Sitter (BDS) limits and confront them with recent observational data from WMAP7 by using the publicly available code CAMB.

24 pages, 5 figures, Accepted for publication in Nuclear Physics B

References in corpus (14)

• Wilkinson Microwave Anisotropy Probe (WMAP) Three Year Results: Implications for Cosmology
• Covariant Galileon
• Imperfect Dark Energy from Kinetic Gravity Braiding
• G-inflation: inflation driven by the Galileon field
• Galileon Cosmology
• Galileon inflation
• Non-Gaussianity in the modulated reheating scenario
• Higgs G-inflation
• Symmetries for Galileons and DBI scalars on curved space
• Primordial non-Gaussianity from the DBI Galileons
• Stability and superluminality of spherical DBI galileon solutions
• The Vainshtein mechanism in the Decoupling Limit of massive gravity
• Supersymmetric DBI inflation
• Features of warped geometry in presence of Gauss-Bonnet coupling

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