Non-local scalar fields inflationary mechanism in light of Planck $2013$

Abstract

A generalization of the canonical and non-canonical theory of inflation is introduced in which the kinetic energy term in action is written as non-local term. The inflationary universe within the framework of considering this non-locality will be studied. To investigate the effects of non-locality on the inflationary parameters we consider two well known models of inflationary scenario includes of chaotic and exponential inflation proposals. For such scenarios some important parameters include slow roll parameters, scalar and tensor power spectra, spectral indices, the tensor-to-scalar ratio and so on for both mentioned models, chaotic and exponential inflationary scenarios, will be calculated. Also the Hamilton-Jacobi formalism, as an easiest way to study the effect of perturbation based on e-folding number $N$, to investigate inflationary attractors will be used. The free theoretical parameters of this model will be compared with observations by means of Planck $2013$, $WMAP9+eCMB+BAO+H_0$ data sets in addition to $BICEP2$ data surveying. It will be shown that our theoretical results are in acceptable range in comparison to observations. For instance the tensor-to-scalar ratio for exponential potential, by considering $BICEP2$ is in best agreement in comparison with chaotic inflation.

15 pages, 5 tables

References in corpus (12)

• Cosmology and the Fate of Dilatation Symmetry
• Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Data Processing, Sky Maps, and Basic Results
• Modified non-local-F(R) gravity as the key for the inflation and dark energy
• Phantom and non-phantom dark energy: The cosmological relevance of non-locally corrected gravity
• Inflation in (Super-)renormalizable Gravity
• Diffusing non-local inflation: Solving the field equations as an initial value problem
• Reconstruction of scalar field theories realizing inflation consistent with the Planck and BICEP2 results
• Observational constraints on thawing quintessence models
• Hamilton-Jacobi Formalism for Tachyon Inflation
• Brane inflation driven by noncanonical scalar field
• On the holographic dark energy in chameleon scalar-tensor cosmology
• Boundary Effects in Local Inflation and Spectrum of Density Perturbations

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