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Warm Inflation in the Adiabatic Regime- a Model, an Existence Proof for Inflationary Dynamics in Quantum Field Theory
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abstract
Warm inflation is examined in a multi-field model. Solutions are obtained for expansion e-folds and scalar density perturbations. Nonequilibrium dynamics is restricted to a regime that is displaced only slightly from thermal equilibrium and in which all macroscopic motion is adiabatic. In such a regime, nonequilibrium dynamics is well defined, provided macroscopic motions that displace the thermal equilibrium state occur sufficiently slow. The solution has adjustable parameters that permit observational consistency with respect to expansion e-folds and density perturbations in the full adiabatic regime, thus insuring a valid solution regime. For particle physics, the model is nonstandard since it requires a large number of fields, $> 10^4$. A particle physics/string interpretation of the model and solutions is discussed, which can accommodate the large field number requirement.
Forward citations
Cited by 7 Pith papers
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Perturbative Dissipation in Minimal Warm Inflation
In minimal warm inflation, perturbative dissipation from Landau damping and plasmon decay produces a third-time-derivative friction term linear in alpha, but slow-roll suppression makes it at least 10^-6 smaller than ...
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Searching for Folded Primordial Non-Gaussianity with Galaxy Surveys
The galaxy bispectrum, not the power spectrum, is the main probe of folded primordial non-Gaussianity; narrow folded signals are washed out by Fourier-space binning.
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Warm Inflation with Pseudo-scalar Couplings
Warm inflation models with pseudo-scalar couplings require inclusion of induced chemical potentials that make the thermal friction-fluctuation relation model-dependent rather than universal.
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WI2easy: warm inflation dynamics made easy
WI2easy provides a public Mathematica implementation that computes warm inflation dynamics and curvature perturbation spectra via a deterministic Fokker-Planck approach, and shows that the universality of the G(Q) cor...
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Warming up the Fibres
All four fibre inflation potentials are claimed to agree with CMB observations under warm inflation, and strong dissipation can shrink the inflaton field excursion below the Planck scale.
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The $\alpha$-Attractor E-Model in Warm Inflation: Observational Viability from Planck 2018
The warm α-attractor E-model is claimed to be compatible with Planck 2018 in both weak and strong dissipative regimes, but the strong-regime derivation contains a missing ε² factor that invalidates the predicted tenso...
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Lectures on Open Systems and Cosmology
A pedagogical review that presents the density-matrix/master-equation formalism and the Schwinger–Keldysh path integral in one notation and applies them to inflation; it claims no new result.
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