Detectable primordial non-gaussianities and gravitational waves in k-inflation

Abstract

An inflationary single field model with a non-trivial kinetic term for the inflaton is discussed. It is shown that it is possible to have large primordial non-gaussianities and large tensor-to-scalar ratio in a simple concrete model with just a scalar field and a generalized kinetic term for the inflaton field. This is potentially interesting in the prospect of new forthcoming observations.

4 pages, 1 figure, REVTEX, to appear in PRD

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Cited by in corpus (20)

• Refining inflation using non-canonical scalars
• Cosmological phase space analysis of the F (X) - V (phi) scalar field and bouncing solutions
• Generalizing a Unified Model of Dark Matter, Dark Energy, and Inflation with Non Canonical Kinetic Term
• Effective gravitational coupling in modified teleparallel theories
• Primordial black holes in non-canonical scalar field inflation driven by quartic potential in the presence of bump
• Primordial black holes and secondary gravitational waves from generalized power-law non-canonical inflation with quartic potential
• Cosmic acceleration in non-canonical scalar field model - An interacting scenario
• Warm DBI inflation with constant sound speed
• Study of parametrized dark energy models with a general non-canonical scalar field
• Natural Inflation with non minimal coupling to gravity in $R^2$ gravity under the Palatini formalism
• Embedding DBI inflation in scalar-tensor theory
• Testing inflationary consistency relations by the potential CMB observations
• Study in the noncanonical domain of Goldstone inflation
• Non-minimally Coupled Tachyon Field in Teleparallel Gravity
• Anisotropic Bouncing Scenario in $F(X)-V(\varphi )$ model
• Hamilton-Jacobi formalism for k-inflation
• Breaking the degeneracy of non-canonical quartic inflation by reheating considerations
• Dynamics of potential-free warm $\mathbf{k}$-inflation with nonminimal derivative coupling
• Reconstructing square-law k-inflation from Planck data
• Anisotropic Cyclic Universe in $F(X)-V(\varphi )$ model