Multifield inflation beyond Nfield=2: non-Gaussianities and single-field effective theory

DOI10.1088/1475-7516/2021/04/002zbMath1485.83172arXiv2011.05930OpenAlexW3103733002MaRDI QIDQ5026084

Lucas Pinol

Publication date: 7 February 2022

Published in: Journal of Cosmology and Astroparticle Physics (Search for Journal in Brave)

Full work available at URL: https://arxiv.org/abs/2011.05930

zbMATH Keywords

inflationnon-Gaussianitycosmological perturbation theoryphysics of the early universe

Mathematics Subject Classification ID

Relativistic cosmology (83F05) Perturbations in context of PDEs (35B20) Measures of information, entropy (94A17) Methods of global Riemannian geometry, including PDE methods; curvature restrictions (53C21) Equations of motion in general relativity and gravitational theory (83C10)

Related Items

Opening the reheating box in multifield inflation, Dynamical renormalization and universality in classical multifield cosmological models, Rapid-turn inflation in supergravity is rare and tachyonic, No-go theorem for scalar-trispectrum-induced gravitational waves, (Slow-)twisting inflationary attractors, On the constant roll complex scalar field inflationary models, Primordial stochastic gravitational wave backgrounds from a sharp feature in three-field inflation. Part I. The radiation era, Tracking the multifield dynamics with cosmological data: a Monte Carlo approach, (Super)universal attractors and the de Sitter vacua in string landscape, Cosmological bootstrap in slow motion

Uses Software

• PyTransport
• CppTransport

Cites Work

• Inflating in a trough: single-field effective theory from multiple-field curved valleys
• Effective field theory approach to quasi-single field inflation and effects of heavy fields
• Starting the universe: stable violation of the null energy condition and non-standard cosmologies
• The cosmological bootstrap: inflationary correlators from symmetries and singularities
• Republication of: The dynamics of general relativity
• Role of surface integrals in the Hamiltonian formulation of general relativity
• Non-Gaussianity as a particle detector
• The multi-field, rapid-turn inflationary solution
• Revisiting non-Gaussianity in multifield inflation with curved field space
• Higgs vacuum (in)stability during inflation. The dangerous relevance of De Sitter departure and Planck-suppressed operators
• String cosmology: a review
• A geometrical approach to nonlinear perturbations in relativistic cosmology
• Scalar perturbations during multiple-field slow-roll inflation
• The gravitational Hamiltonian, action, entropy and surface terms
• Squeezed primordial bispectrum from a general vacuum state
• Productive interactions: heavy particles and non-Gaussianity
• Numerically evaluating the bispectrum in curved field-space— with PyTransport 2.0
• Primordial fluctuations and non-Gaussianities in sidetracked inflation
• Flattened non-Gaussianities from the effective field theory of inflation with imaginary speed of sound
• Scaling attractors in multi-field inflation
• Many-field inflation: universality or prior dependence?
• Generating PBHs and small-scale GWs in two-field models of inflation
• Attractors, bifurcations and curvature in multi-field inflation
• Non-Gaussianities in models of inflation with large and negative entropic masses
• Inflation and String Theory
• General Relativity
• \(k\)-inflation
• Perturbations in \(k\)-inflation
• Holographic Theories at Finite θ‐Angle, CP‐Violation, Glueball Spectra and Strong‐Coupling Instabilities