Results 21 to 30 of about 9,790 (281)

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

Universe, 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
exaly   +3 more sources

Running and Running of the Running of the Scalar Spectral Index in Warm Inflation

Universe, 2023
The next generation of cosmological observations are expected to improve the measurements of several quantities connected to the primordial inflation in the early Universe.
Suratna Das, Rudnei O Ramos, Ramos Rudnei O   +2 more
exaly   +3 more sources

Minimal warm inflation [PDF]

Journal of Cosmology and Astroparticle Physics, 2020
Slow-roll inflation is a successful paradigm. However we find that even a small coupling of the inflaton to other light fields can dramatically alter the dynamics and predictions of inflation. As an example, the inflaton can generically have an axion-like coupling to gauge bosons. Even relatively small couplings will automatically induce a thermal bath
Berghaus, Kim V., Graham, Peter W., Kaplan, David E.   +2 more
openaire   +3 more sources

Warm inflation with Barrow holographic dark energy

Nuclear Physics B
In this work we study the warm inflation mechanism in the presence of the Barrow holographic dark energy model. Warm inflation differs from other forms of inflation primarily in that it assumes that radiation and inflaton fields exist and interact ...
Moli Ghosh, Prabir Rudra, Surajit Chattopadhyay, Behnam Pourhassan   +3 more
doaj   +2 more sources

Chromonatural warm inflation

Chromonatural warm inflation
Chromonatural inflation is a model where non-Abelian gauge fields are sustained by the coupling of the axion with the gauge field through the Chern-Simons term, while minimal warm inflation is a model where the axion produces a thermal bath of non-Abelian gauge particles through the Chern-Simons term.
Ann Mukuno, Jiro Soda
core   +4 more sources

Heterotic warm inflation

Journal of High Energy Physics
We propose a two-field model of warm inflation motivated by a heterotic string construction, involving an axion and a dilaton-like scalar field with non-trivial kinetic mixing.
Arjun Berera, Heliudson Bernardo, Suddhasattwa Brahma, Jaime Calderón-Figueroa, Rudnei O. Ramos, Michael W. Toomey   +5 more
doaj   +3 more sources

Warm DBI inflation with constant sound speed

European Physical Journal C: Particles and Fields, 2019
We study inflation with the Dirac–Born–Infeld (DBI) noncanonical scalar field in both the cold and warm scenarios. We consider the Anti-de Sitter warp factor $$f(\phi )=f_{0}/\phi ^{4}$$ f(ϕ)=f0/ϕ4 for the DBI inflation and check viability of the quartic
S. Rasouli, K. Rezazadeh, A. Abdolmaleki, K. Karami   +3 more
doaj   +2 more sources

Warm hilltop inflation

Physical Review D, 2008
9 pages, 2 ...
Bueno-Sanchez, Juan Carlos, Bastero Gil, Mar, Berera, Arjun, Dimopoulos, Konstantinos   +3 more
openaire   +3 more sources

Warm affine inflation

Journal of Cosmology and Astroparticle Physics, 2023
Abstract The warm inflationary scenario is investigated in the context of affine gravity formalism. A general framework is provided for studying different single-field potentials. Using the sphaleron mechanism we explain the continuous dissipation of the inflaton field into radiation, leading to the Γ = Γ0 T
AlHallak, Mahmoud
openaire   +4 more sources

Perturbations in warm inflation [PDF]

Physical Review D, 2001
12 pages, no figures, requires revtex4. Further explanation on the origin of the entropy perturbation, reference added and minor notation change. Version accepted for publication in Phys.
De Oliveira, H. P., Jorás, S. E.
openaire   +2 more sources