Intermediate inflation driven by DBI scalar field

Abstract

Picking out DBI scalar field as inflation, the slow-rolling inflationary scenario is studied by attributing an exponential time function to scale factor; known as intermediate inflation. The perturbation parameters of the model are estimated numerically for two different cases and the final result is compared with Planck data. The diagram of tensor-to-scalar ratio $r$ versus scalar spectra index $n_s$ is illustrated, and it is found out that they are in acceptable range, as suggested by Planck. In addition, the acquired values for amplitude of scalar perturbation reveals the ability of the model for depicting a good picture of the universe in one of the earliest stage. As a further argument, the non-Gaussianity is investigated displaying that the model prediction stands in $68\%$ CL regime; according to latest Planck data.

8p pages, 6 figures, 3 tables

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Cited by in corpus (18)

• Brane Constant-roll Inflation
• Tsallis holographic dark energy for inflation
• Warm Tachyon Inflation and Swampland Criteria
• Tachyon inflation with steep potentials
• Observational constraints on DBI constant-roll inflation
• Brane inflation and Trans-Planckian censorship conjecture
• Resurrecting the Power-law, Intermediate, and Logamediate Inflations in the DBI Scenario with Constant Sound Speed
• Mimetic DBI Inflation in Confrontation with Planck2018 data
• Galileon intermediate inflation
• Holographic warm inflation
• Holographic reconstruction of k-essence model with Tsallis and the most generalized Nojiri-Odintsov version of holographic dark energy
• Tsallis holographic inflation in $f(R,T)$ gravity: CMB constraints, reheating, and swampland implications
• Inflation with exotic kinetic terms in Einstein-Chern-Simons gravity
• Warm Inflation with Barrow Holographic Dark Energy
• Viable Intermediate Inflation in the Mimetic DBI Model
• Warm Inflation in $f(Q)$ gravity
• Non-canonical scalar field in low anisotropy universe with intermediate inflation
• Hamilton-Jacobi analysis of noncanonical inflation in $f(R,T)$ gravity: Constraints from Planck/ACT data, and theoretical bounds