Priomordial non-Gaussian features from DBI Galileon inflation

Abstract

We have studied primordial non-Gaussian features from a model of potential driven single field DBI Galileon inflation. We have computed the bispectrum from the three point correlation function considering all possible cross correlation between scalar and tensor modes from the proposed setup. Further, we have computed the trispectrum from four point correlation function considering the contribution from contact interaction, scalar and graviton exchange diagrams in the in-in picture. Finally we have obtained the non-Gaussian consistency conditions from the four point correlator, which results in partial violation of the Suyama-Yamaguchi four-point consistency relation. This further leads to the conclusion that sufficient primordial non-Gaussianities can be obtained from DBI Galileon inflation.

31 pages, Revision accepted by European Physical Journal C

References in corpus (23)

• Observational Signatures and Non-Gaussianities of General Single Field Inflation
• Primordial Non-Gaussianities from Inflation Models
• Non-Gaussianities in two-field inflation
• Primordial trispectrum from inflation
• Primordial black holes as a tool for constraining non-Gaussianity
• The Inflationary Trispectrum for Models with Large Non-Gaussianities
• Symmetries for Galileons and DBI scalars on curved space
• Non-gaussianity from the second-order cosmological perturbation
• Going beyond the Kaiser redshift-space distortion formula: a full general relativistic account of the effects and their detectability in galaxy clustering
• Primordial non-Gaussianity from the DBI Galileons
• A numerical study of non-gaussianity in the curvaton scenario
• Folded Resonant Non-Gaussianity in General Single Field Inflation
• Primordial non-Gaussianities in general modified gravitational models of inflation
• Primordial non-Gaussianity from G-inflation
• Primordial non-Gaussianity and the CMB bispectrum
• Stability and superluminality of spherical DBI galileon solutions
• A Naturally Large Four-Point Function in Single Field Inflation
• DBI Galileon inflation in background SUGRA
• Non-Gaussian Inflationary Perturbations from the dS/CFT Correspondence
• Primordial Non-Gaussianity and Gravitational Waves: Observational Tests of Brane Inflation in String Theory
• Non-Gaussianity Consistency Relation for Multi-field Inflation
• Non-Gaussian corrections to the probability distribution of the curvature perturbation from inflation
• The different varieties of the Suyama-Yamaguchi consistency relation and its violation as a signal of statistical inhomogeneity

Cited by in corpus (43)

• Quantum loop effects on the power spectrum and constraints on primordial black holes
• Galileon inflation evades the no-go for PBH formation in the single-field framework
• No-go for the formation of heavy mass Primordial Black Holes in Single Field Inflation
• Evolution of cosmological perturbations and the production of non-Gaussianities through a nonsingular bounce: Indications for a no-go theorem in single field matter bounce cosmologies
• Entangled de Sitter from Stringy Axionic Bell pair I: An analysis using Bunch Davies vacuum
• Quantum entanglement in de Sitter space from Stringy Axion: An analysis using $\alpha$ vacua
• Primordial non-Gaussianity from ultra slow-roll Galileon inflation
• Single field inflation in the light of Pulsar Timing Array Data: Quintessential interpretation of blue tilted tensor spectrum through Non-Bunch Davies initial condition
• Scalar induced gravity waves from ultra slow-roll Galileon inflation
• Primordial non-Gaussianity as a saviour for PBH overproduction in SIGWs generated by Pulsar Timing Arrays for Galileon inflation
• Quantum aspects of chaos and complexity from bouncing cosmology: A study with two-mode single field squeezed state formalism
• Realisation of the ultra-slow roll phase in Galileon inflation and PBH overproduction
• CMB from EFT
• COSMOS-$e^{\prime }$- soft Higgsotic attractors
• COSMOS-$e^{\prime }$-GTachyon from String Theory
• Reconstructing inflationary paradigm within Effective Field Theory framework
• Large fluctuations and Primordial Black Holes
• Cosmological spectrum of two-point correlation function from vacuum fluctuation of Stringy Axion field in De Sitter space: A study of the role of Quantum Entanglement
• The Cosmological OTOC: Formulating new cosmological micro-canonical correlation functions for random chaotic fluctuations in Out-of-Equilibrium Quantum Statistical Field Theory
• Obviating PBH overproduction for SIGWs generated by Pulsar Timing Arrays in loop corrected EFT of bounce
• Born-Infeld cosmology with scalar Born-Infeld matter
• Can Dark Matter be an artifact of extended theories of gravity?
• Regularized-Renormalized-Resummed loop corrected power spectrum of non-singular bounce with Primordial Black Hole formation
• DBI Galileon inflation in the light of Planck 2015
• Untangling PBH overproduction in $w$-SIGWs generated by Pulsar Timing Arrays for MST-EFT of single field inflation
• Mimetic DBI Inflation in Confrontation with Planck2018 data
• Galileon intermediate inflation
• The Cosmological OTOC: A New Proposal for Quantifying Auto-Correlated Random Non-Chaotic Primordial Fluctuations
• Primordial Black Holes from Effective Field Theory of Stochastic Single Field Inflation at NNNLO
• Hysteresis in the Sky
• Primordial Black Holes Dark Matter and Secondary Gravitational Waves from Warm Higgs-G Inflation
• Entanglement negativity in de Sitter biverse from Stringy Axionic Bell pair: An analysis using Bunch-Davies vacuum
• Effective Field Theory of Dark Matter from membrane inflationary paradigm
• Negative non-Gaussianity as a salvager for PBHs with PTAs in bounce
• Generic 3-point Statistics with Tensor Modes in Light of Swampland and TCC
• Fermion localization in higher curvature spacetime
• Reconstructing inflationary potential from NANOGrav 15-year Data: A robust study using Non-Bunch Davies initial condition
• Tensor bispectrum mediated by an excited scalar field during inflation
• Viable Intermediate Inflation in the Mimetic DBI Model
• A Proposal for Constraining Initial Vacuum by CMB
• Cosmological Geometric Phase From Pure Quantum States: A study without/with having Bell's inequality violation
• Tadpole Cosmology: Milne Solution as a Cosmological Constant Hideout
• Inflation from a generalized exponential plateau: towards extra suppressed tensor-to-scalar ratios