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WarmSPy: a numerical study of cosmological perturbations in warm inflation [PDF]
Journal of Cosmology and Astroparticle Physics, 2023 We present WarmSPy, a numerical code in Python designed to solve for the perturbations' equations in warm inflation models and compute the corresponding scalar power spectrum at CMB horizon crossing.
Gabriele Montefalcone +3 more
semanticscholar +1 more source
On Warm Natural Inflation and Planck 2018 Constraints
Universe, 2023 We investigate natural inflation with non-minimal coupling to gravity, characterized either by a quadratic or a periodic term, within the warm inflation paradigm during the slow-roll stage, in both strong and weak dissipation limits; and show that, in ...
Mahmoud AlHallak +3 more
doaj +1 more source
Nuclear Physics B, 2023 In this work, we study warm inflationary scenario based on a deformation of R2 gravity. We start considering Rp and assume p=2(1+δ) with δ≪1 so that we simply obtain warm R2 inflation when setting δ=0.
Apirak Payaka +2 more
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Embedding ultraslow-roll inflaton dynamics in warm inflation [PDF]
Physical Review D, 2023 Slow-roll of the inflaton field defines the standard dynamics of the inflationary epoch. However, the inflationary system deviates from slow-roll when it encounters an extremely flat region of the inflaton potential, and enters a phase dubbed Ultra slow ...
Sandip Biswas +2 more
semanticscholar +1 more source
Defying eternal inflation in warm inflation with a negative running [PDF]
Journal of Cosmology and Astroparticle Physics, 2023 It was pointed out previously [1] that a sufficiently negative running of the spectral index of curvature perturbations from (ordinary i.e. cold) inflation is able to prevent eternal inflation from ever occurring.
Gabriele Montefalcone +3 more
semanticscholar +1 more source
Revisiting Barrow's graduated inflationary universe: A warm perspective
Physics Letters B, 2022 It is presumed that thermal fluctuations present during inflationary epoch can make inflaton scalar field to interact with other fields resulting in the existence of a thermal component during the inflationary period.
Subhra Bhattacharya
doaj +1 more source
Physics Letters B, 2013 In this paper we introduce the "warm vector inflation" scenario. In warm inflation scenario radiation is produced during the inflation epoch and reheating is avoided. Slow-roll and perturbation parameters of this model are presented. We develop our model using intermediate inflation model.
M. R. Setare, Vahid Kamali
openaire +3 more sources
Dark matter and radiation production during warm inflation in a curved Universe - an irreversible thermodynamic approach [PDF]
Romanian Astronomical Journal, 2023 "We investigate the creation of dark matter particles as a result of the decay of the scalar field in the framework of warm inflationary models, by using the irreversible thermodynamics of open systems with matter creation/annihilation.
Teodora Matei +2 more
semanticscholar +1 more source
New limits on warm inflation from pulsar timing arrays [PDF]
Physics of the Dark UniverseRocco D’Agostino, Matteo Califano
openalex +2 more sources