Recent developments in warm inflation
arXiv:2302.02827 · doi:10.3390/universe9030124
Abstract
Warm inflation, its different particle physics model implementations and the implications of dissipative particle production for its cosmology are reviewed. First, we briefly present the background dynamics of warm inflation and contrast it with the cold inflation picture. An exposition of the space of parameters for different well-motivated potentials, which are ruled out, or severely constrained in the cold inflation scenario, but not necessarily in warm inflation, is provided. Next, the quantum field theory aspects in realizing explicit microscopic models for warm inflation are given. This includes the derivation of dissipation coefficients relevant in warm inflation for different particle field theory models. The dynamics of cosmological perturbations in warm inflation are then described. The general expression for the curvature scalar power spectrum is shown. We then discuss in details the relevant regimes of warm inflation, the weak and strong dissipative regimes. We also discuss the results predicted in these regimes of warm inflation and how they are confronted with the observational data. We explain how the dissipative dynamics in warm inflation can address several long-standing issues related to (post-) inflationary cosmology. This includes recent discussions concerning the so-called swampland criteria and how warm inflation can belong to the landscape of string theory.
29 pages, 4 figures. An invited review for the journal Universe
References in corpus (29)
- On the Geometry of the String Landscape and the Swampland
- BICEP / Keck XIII: Improved Constraints on Primordial Gravitational Waves using Planck, WMAP, and BICEP/Keck Observations through the 2018 Observing Season
- The Swampland: Introduction and Review
- Warm Inflation and its Microphysical Basis
- The Sphaleron Rate in SU(N) Gauge Theory
- Power spectrum for inflation models with quantum and thermal noises
- Warm inflation dissipative effects: predictions and constraints from the Planck data
- Tachyon warm inflationary universe models
- Distance, de Sitter and Trans-Planckian Censorship conjectures: the status quo of Warm Inflation
- Theory of non-Gaussianity in warm inflation
- Warm brane inflation with an exponential potential: A consistent realization away from the swampland
- Warm Quintessential Inflation
- Observational implications of mattergenesis during inflation
- Trans-Planckian censorship and other swampland bothers addressed in warm inflation
- Stability analysis for the background equations for inflation with dissipation and in a viscous radiation bath
- Primordial Black-Hole Dark Matter via Warm Natural Inflation
- Unified early and late Universe cosmology through dissipative effects in steep quintessential inflation potential models
- Local Approximations for Effective Scalar Field Equations of Motion
- Warming up cold inflation
- A paradigm of warm quintessential inflation and production of relic gravity waves
- Running and running of the running of the scalar spectral index in warm inflation
- Gravitino cosmology in supersymmetric warm inflation
- Consistency of warm k-inflation
- Warm-Intermediate Inflationary Universe Model with Viscous Pressure in High Dissipative Regime
- The gravitino problem in supersymmetric warm inflation
- Warm inflation with non-comoving scalar field and radiation fluid
- Observational Constraints on Two-field Warm Inflation
- Scalar warm inflation in holographic cosmology
- Does fractal Universe favour warm inflation: Observational support?