Extended Effective Field Theory of Inflation

Abstract

We present a general framework where the effective field theory of single field inflation is extended by the inclusion of operators with mass dimension 3 and 4 in the unitary gauge. These higher dimensional operators introduce quartic and sextic corrections to the dispersion relation. We study the regime of validity of this extended effective field theory of inflation and the effect of these higher dimensional operators on CMB observables associated with scalar perturbations, such as the speed of sound, the amplitude of the power spectrum and the tensor-to-scalar ratio. Tensor perturbations remain instead, unaltered.

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References in corpus (9)

• The Effective Field Theory of Inflation
• Causality, Analyticity and an IR Obstruction to UV Completion
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• Enhanced Non-Gaussianity from Excited Initial States
• The Effective Field Theory of nonsingular cosmology
• Resilience of the standard predictions for primordial tensor modes
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Cited by in corpus (31)

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• Primordial black holes and scalar-induced gravitational waves from the generalized Brans-Dicke theory
• Formation and Abundance of Late Forming Primordial Black Holes as Dark Matter
• The effective field theory approach to the strong coupling issue in $f(T)$ gravity
• Higgs as heavy-lifted physics during inflation
• One-loop infrared rescattering by enhanced scalar fluctuations during inflation
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• Non-adiabatic Evolution of Primordial Perturbations and non-Gaussinity in Hybrid Approach of Loop Quantum Cosmology
• Primordial black holes and induced gravitational waves from double-pole inflation
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• Induced Gravitational Waves from Multi-Sound Speed Resonances during Cosmological Inflation
• Mimetic Inflation
• Non-Unitary Evolution in the General Extended EFT of Inflation & Excited Initial States
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• Spatially covariant gravity with nonmetricity
• Induced gravitational waves from statistically anisotropic scalar perturbations
• Inflationary perturbation spectra at next-to-leading slow-roll order in effective field theory of inflation
• Non-Gaussianities in the Extended EFT of Inflation
• Non-Minimal M-flation
• Inflationary Cosmology with Quantum Gravitational Effects and the Swampland Conjectures
• Constraining Violations of the Weak Equivalence Principle in the Dark Sector
• Primordial gravitational waves from excited states
• Cosmological perturbation theory with trinity of scalar fields