Results 21 to 30 of about 249 (200)
Strengthening the de Sitter swampland conjecture in warm inflation
Journal 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
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Journal of Cosmology and Astroparticle Physics, 2011 19 pages, 7 figures; version accepted in ...
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GEOMETRIC TACHYON AND WARM INFLATION [PDF]
Modern Physics Letters A, 2013 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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Journal of Cosmology and Astroparticle Physics, 2017 23 pages, 4 figures, Accepted for publication in ...
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WARM INFLATION MODEL BUILDING [PDF]
International Journal of Modern Physics A, 2009 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]
Journal of Cosmology and Astroparticle Physics, 2018 20 pages, 5 figures, 1 ...
Berera, Arjun +3 more
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Intermediate class of warm pseudoscalar inflation
European 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
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WARM TACHYONIC INFLATION IN A WARPED BACKGROUND [PDF]
International Journal of Modern Physics D, 2009 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]
International Journal of Geometric Methods in Modern Physics, 2017 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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