Results 41 to 50 of about 896,961 (328)

Looking inside the Swampland from Warm Inflation: Dissipative Effects in De Sitter Expansion

open access: yesUniverse, 2023
This paper reviews the theoretical and phenomenological implications of the swampland conjectures from the perspective of inflationary cosmology, focusing on warm inflation.
Arjun Berera, Jaime Calderón-Figueroa
doaj   +1 more source

Extended warm inflation [PDF]

open access: yesPhysical Review D, 1999
11 pages, 1 ...
Maia, J. M. F., Lima, J. A. S.
openaire   +2 more sources

Revisiting Barrow's graduated inflationary universe: A warm perspective

open access: yesPhysics 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

Warm vector inflation [PDF]

open access: yesPhysics 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.
Setare, M. R., Kamali, V.
openaire   +3 more sources

Is warm inflation possible? [PDF]

open access: yesPhysical Review D, 1999
22 pages ...
Yokoyama, Jun'ichi, Linde, Andrei
openaire   +2 more sources

Strengthening the de Sitter swampland conjecture in warm inflation

open access: yesJournal of High Energy Physics, 2020
The de Sitter constraint on the space of effective scalar field theories consistent with superstring theory provides a lower bound on the slope of the potential of a scalar field which dominates the evolution of the Universe, e.g., a hypothetical ...
Robert Brandenberger   +2 more
doaj   +1 more source

G-warm inflation [PDF]

open access: yesJournal of Cosmology and Astroparticle Physics, 2017
23 pages, 4 figures, Accepted for publication in ...
openaire   +2 more sources

Intermediate class of warm pseudoscalar inflation

open access: yesEuropean Physical Journal C: Particles and Fields, 2021
High dissipative regime of warm pseudoscalar inflation model (Kamali in Phys Rev D 100:043520, arXiv:1901.01897 [gr-qc], 2019) with an approximately constant value of dissipation parameter Q is studied.
Saeid Ebrahimi, Vahid Kamali, Asma Alaei
doaj   +1 more source

Warm-assisted natural inflation [PDF]

open access: yesJournal of Cosmology and Astroparticle Physics, 2021
Abstract We consider natural inflation in a warm inflation framework with a temperature-dependent dissipative coefficient Γ∝ T3. Natural inflation can be compatible with the Planck 2018 results with such warm assistance. With no a priori assumptions on the dissipative effect's magnitude, we find that the Planck results prefer a weak ...
Reyimuaji, Yakefu, Zhang, Xinyi
openaire   +2 more sources

Warming up cold inflation [PDF]

open access: yesJournal of Cosmology and Astroparticle Physics, 2021
Abstract The axion is a well-motivated candidate for the inflaton, as the radiative corrections that spoil many single-field models are avoided by virtue of its shift symmetry. However, axions generically couple to gauge sectors. As the axion slow-rolls during inflation, this coupling can cause the production of a non-diluting thermal ...
DeRocco, William   +2 more
openaire   +3 more sources

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