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19 pages, 7 figures; version accepted in ...
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GEOMETRIC TACHYON AND WARM INFLATION [PDF]
The inflationary models developed in presence of a background radiation can be a solution to the reheating problem faced by common cold (isentropic) inflationary scenario. A D-brane system comprising of k Neuvo–Schwarz (NS) 5-branes with a transverse circle and BPS D3-branes with world volume parallel to the NS 5-branes, placed at a point on the ...
Bhattacharjee, Anindita +1 more
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23 pages, 4 figures, Accepted for publication in ...
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WARM INFLATION MODEL BUILDING [PDF]
We review the main aspects of the warm inflation scenario, focusing on the inflationary dynamics and the predictions related to the primordial spectrum of perturbations, to be compared with the recent cosmological observations. We study in detail three different classes of inflationary models, chaotic, hybrid models and hilltop models, and discuss ...
Bastero-Gil, Mar, Berera, Arjun
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Identifying universality in warm inflation [PDF]
20 pages, 5 figures, 1 ...
Berera, Arjun +3 more
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WARM TACHYONIC INFLATION IN A WARPED BACKGROUND [PDF]
We analyze warm tachyonic inflation, proposed in the literature, from the viewpoint of four-dimensional effective action for the tachyon field on a non-BPS D3-brane. We find that consistency with observational data on density perturbation and validity of effective action requires warped compactification.
Deshamukhya, Atri, Panda, Sudhakar
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k-essence for warm inflation on the brane [PDF]
In this paper, [Formula: see text]-inflation is analyzed in warm braneworld scenario. A general class of [Formula: see text]-essence models with power-law kinetic term is investigated and weak and strong dissipation regimes are studied. Scalar perturbations and spectral index are derived. The results are discussed and applied to specific examples.
Sebastiani, Lorenzo, Myrzakulov, Ratbay
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Warm inflation with an oscillatory inflaton in the non-minimal kinetic coupling model
In the cold inflation scenario, the slow roll inflation and reheating via coherent rapid oscillation, are usually considered as two distinct eras. When the slow roll ends, a rapid oscillation phase begins and the inflaton decays to relativistic particles
Parviz Goodarzi, H. Mohseni Sadjadi
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Warm pseudoscalar inflation [PDF]
5 pages, 3 figures, 1 table, comments ...
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Salvaging power-law inflation through warming
Power-law inflation with scale factor $$a \propto t^m$$ a ∝ t m is investigated in the context of warm inflation. The treatment is performed in the weak and strong dissipation limits.
M. Alhallak, N. Chamoun, M. S. Eldaher
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