Results 61 to 70 of about 771,516 (312)

Minimal warm inflation with complete medium response [PDF]

Journal of Cosmology and Astroparticle Physics, 2021
If a homogeneous field evolves within a medium, with the latter gradually picking up a temperature, then the friction felt by the field depends on how its evolution rate compares with medium time scales.
M. Laine, S. Procacci
semanticscholar   +1 more source

G-warm inflation [PDF]

Journal of Cosmology and Astroparticle Physics, 2017
23 pages, 4 figures, Accepted for publication in ...
openaire   +4 more sources

Constraints on the scalar-field potential in warm inflation [PDF]

Physical Review D, 2022
We quantify the degree of fine tuning required to achieve an observationally viable period of inflation in the strongly dissipative regime of warm inflation.
Gabriele Montefalcone, Vikas Aragam, L. Visinelli, K. Freese   +3 more
semanticscholar   +1 more source

Constraints of Anisotropy on Warm Power-Law Ination in Light of Planck Results [PDF]

Iranian Journal of Astronomy and Astrophysics, 2021
In this article, we examine the effects of anisotropy on a model of canonical warm inflation with the power-law potential. And we have compared the limitations of this model with Planck's results.
Zahra Ghadiry, Ali Aghamohammadi, Abdollah Refaei   +2 more
doaj   +1 more source

Scalar warm inflation in holographic cosmology [PDF]

Physical Review D, 2022
We consider warm inflation in the context of holographic cosmology. The weak and the strong dissipative regime are analysed in the slow-roll approximation and within what is known as intermediate inflation.
Zahra Bouabdallaoui, A. Errahmani, M. Bouhmadi-López, T. Ouali   +3 more
semanticscholar   +1 more source

Particle creation and warm inflation [PDF]

Physics Letters B, 2007
14 pages, 4 eps figures; minor changes, refs added, to appear in ...
Gert Aarts, Anders Tranberg
openaire   +4 more sources

Salvaging power-law inflation through warming

European Physical Journal C: Particles and Fields, 2023
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
doaj   +1 more source

Inflaton as a pseudo-Nambu-Goldstone boson

Physics Letters B, 2023
In the realistic model of cosmic inflation the inflaton potential should be flat and stable under quantum corrections. It is natural to imagine that there is some symmetry behind and an idea of the inflaton as a Nambu-Goldstone boson of spontaneous ...
Noriaki Kitazawa
doaj   +1 more source

Reassessing constant-roll warm inflation [PDF]

Physical Review D
Departing from standard slow-roll conditions is one way of putting the inflationary paradigm to test, and constraining the dynamics of the inflaton field with a constant-rate of roll of the inflaton field, a.k.a. the constant-roll scenario, is one way of
Sandip Biswas, Kaushik Bhattacharya, Suratna Das   +2 more
semanticscholar   +1 more source

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 ...
Mar Bastero-Gil, Arjun Berera
openaire   +3 more sources