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The Warm Inflation Story [PDF]

Universe, 2023
Warm inflation has normalized two ideas in cosmology, that in the early universe the initial primordial density perturbations generally could be of classical rather than quantum origin and that during inflation, particle production from interactions ...
Arjun Berera
doaj   +6 more sources

Warm Higgs–Starobinsky inflation [PDF]

European Physical Journal C: Particles and Fields, 2022
In this work, we investigate the Higgs–Starobinsky (HS) model in the context of warm inflation scenario. The dissipative parameter as a linear form of temperature of warm inflation is considered with strong and weak regimes.
Daris Samart, Patinya Ma-adlerd, Phongpichit Channuie   +2 more
doaj   +4 more sources

Recent Developments in Warm Inflation [PDF]

Universe, 2023
Warm inflation, its different particle physics model implementations, and the implications of dissipative particle production for its cosmology are reviewed.
Vahid Kamali, Meysam Motaharfar, Rudnei O. Ramos   +2 more
doaj   +4 more sources

Reconstructing warm inflation [PDF]

European Physical Journal C: Particles and Fields, 2018
The reconstruction of a warm inflationary universe model from the scalar spectral index $$n_S(N)$$ nS(N) and the tensor to scalar ratio r(N) as a function of the number of e-folds N is studied.
Ramón Herrera
doaj   +4 more sources

Warm hilltop inflation [PDF]

Physical Review D, 2008
We study the low-temperature limit of warm inflation in a hilltop model. This limit remains valid up to the end of inflation, allowing an analytic description of the entire inflationary stage. In the weak dissipative regime, if the kinetic density of the
Arjun Berera, Bueno Sánchez, Juan Carlos, Konstantinos Dimopoulos, Mar Bastero-gil   +4 more
core   +4 more sources

Running and Running of the Running of the Scalar Spectral Index in Warm Inflation [PDF]

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
doaj   +2 more sources

Constant-roll warm inflation within Rastall gravity

Nuclear Physics B
This research paper used a newly proposed strategy for finding the exact inflationary solutions to the Friedman equations in the context of Rastall theory of gravity (RTG), which is known as constant-roll warm inflation (CRWI).
Rabia Saleem, Iqra Shahid, M. Israr Aslam, Abdul Wahab   +3 more
doaj   +3 more sources

Warm inflation with an oscillatory inflaton in the non-minimal kinetic coupling model

European Physical Journal C: Particles and Fields, 2017
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
doaj   +4 more sources

Warm inflation with a heavy QCD axion [PDF]

Journal of Cosmology and Astroparticle Physics
We propose the first model of warm inflation in which the particle production emerges directly from coupling the inflaton to Standard Model particles.
Kim V. Berghaus, Matthew Forslund, Mark Vincent Guevarra   +2 more
openalex   +2 more sources

WarmSPy: a numerical study of cosmological perturbations in warm inflation [PDF]

Journal of Cosmology and Astroparticle Physics, 2023
We present WarmSPy, a numerical code in Python designed to solve for the perturbations' equations in warm inflation models and compute the corresponding scalar power spectrum at CMB horizon crossing.
Gabriele Montefalcone, Vikas Aragam, Luca Visinelli, Katherine Freese   +3 more
openalex   +3 more sources