Results 291 to 300 of about 896,961 (328)

Thermal gravitons from warm inflation

Physical Review D
In warm inflation (WI), the persistent thermal bath that is sustained by dissipative interactions with the inflaton field produces a stochastic background of gravitational waves (GWs).
Gabriele Montefalcone, Barmak Shams Es Haghi, Tao Xu, Katherine Freese   +3 more
semanticscholar   +3 more sources

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Warm Inflation with the Standard Model.

Physical Review Letters
We show for the first time that warm inflation is feasible with standard model (SM) gauge interactions alone. Our model consists of a minimal extension of the SM by a single scalar inflaton field with an axionlike coupling to gluons and a monomial ...
K. V. Berghaus, M. Drewes, Sebastian Zell   +2 more
semanticscholar   +1 more source

WI2easy: warm inflation dynamics made easy

Journal of Cosmology and Astroparticle Physics
We present WI2easy, a Mathematica package for high-precision analysis of warm inflation (WI) dynamics, enabling efficient computation of both background evolution and curvature perturbations.
Gabriel S. Rodrigues, Rudnei O. Ramos
semanticscholar   +1 more source

Viability of warm inflation with standard model interactions

Physical Review D
The minimal warm inflation scenario proposed in Ref. [1] -- featuring an axionlike inflaton coupled to Standard Model (SM) gluons via the standard interaction $\phi G \tilde G$ -- offers a compelling bridge between inflationary dynamics and SM particle ...
Rudnei O. Ramos, Gabriel S. Rodrigues
semanticscholar   +1 more source

Purely gravitational dark matter production in warm inflation

Physical Review D
We consider an appealing scenario for the production of purely gravitational dark matter in the background of warm inflation, a mechanism that maintains stable thermal bath during inflation.
Qing-Yang Wang, Tianyu Jia, Pei-Ran Chen, Yong Tang   +3 more
semanticscholar   +1 more source

Unraveling the Hubble tension with warm inflation

Classical and quantum gravity
The validity of warm inflation is investigated in the light of recent CMB missions in both strong and weak dissipative regimes. The tensor to scalar ratio of various inflationary models is found to be consistent with the recent CMB results for different ...
Anupama B, P. K. Suresh
semanticscholar   +1 more source

The α-attractor E-Model in warm inflation: observational viability from Planck 2018

Journal of Cosmology and Astroparticle Physics
We explore the inflationary evolution and observational viability of the α-attractor E-model in the framework of warm inflation, focusing on both weak and strong dissipative regimes, with a dissipation coefficient linear in temperature.
Bhargabi Saha, M. Nandy
semanticscholar   +1 more source

Warm Inflation in $f(Q)$ gravity

Chinese Physics C, High Energy Physics & Nuclear Physics
We investigate warm inflation in the framework of $f(Q)$ gravity within a Friedmann-Robertson-Walker spacetime. Unlike cold inflation, where the inflaton evolves in isolation, warm inflation features continuous interaction between the inflaton field ...
Tuhina Ghorui, Prabir Rudra, Farook Rahaman, B. Pourhassan   +3 more
semanticscholar   +1 more source

Dark Matter Production during Warm Inflation via Freeze-In.

Physical Review Letters
We present a novel perspective on the role of inflation in the production of dark matter (DM). Specifically, we explore the DM production during warm inflation via ultraviolet freeze-in (WIFI).
Katherine Freese, Gabriele Montefalcone, Barmak Shams Es Haghi   +2 more
semanticscholar   +1 more source

Stage IV CMB forecasts for warm inflation

Journal of Cosmology and Astroparticle Physics
We report forecast constraints on warm inflation in the light of future cosmic microwave background (CMB) surveys, with data expected to be available in the coming decade.
F. dos Santos, G. Rodrigues, R. de Souza, J. Alcaniz   +3 more
semanticscholar   +1 more source