On the graceful exit problem in warm inflation

Abstract

A seemingly simple question, how does warm inflation exit gracefully?, has a more complex answer than in a cold paradigm. It has been highlighted here that whether warm inflation exits gracefully depends on three independent choices: The form of the potential, the choice of the warm inflation model (i.e., on the form of its dissipative coefficient) and the regime, of weak or strong dissipation, characterizing the warm inflation dynamics. Generic conditions on slow-roll parameters and several constraints on the different model parameters required for warm inflation to exit gracefully are derived.

8 pages, 4 figures, double column, v2: 12 pages, 5 figures, version matched with the published version in PRD

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• The warm inflation story
• Gravity Waves and Primordial Black Holes in Scalar Warm Little Inflation
• Running and running of the running of the scalar spectral index in warm inflation
• Dirac-Born-Infeld warm inflation realization in the strong dissipation regime
• Warm Inflation, Neutrinos and Dark matter: a minimal extension of the Standard Model
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• Salvaging Power-Law Inflation through Warming
• Reconstruction of inflationary scenarios in non-conservative unimodular gravity
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• On the role of dissipative effects in the quantum gravitational onset of warm Starobinsky inflation in a closed universe
• Warm inflation in Weyl geometric gravity