Results 51 to 60 of about 978,154 (293)
Warm pseudoscalar inflation [PDF]
Physical Review D, 2019 5 pages, 3 figures, 1 table, comments ...
openaire +2 more sources
Temperature in warm inflation in non minimal kinetic coupling model [PDF]
, 2015 Warm inflation in the non minimal derivative coupling model with a general dissipation coefficient is considered. We investigate conditions for the existence of the slow roll approximation and study cosmological perturbations. The spectral index, and the
Goodarzi, Parviz, Sadjadi, H. Mohseni
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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
Particle creation and warm inflation [PDF]
, 2007 During cosmological inflation, it has been suggested that fields coupled to the inflaton can be excited by the slow-rolling inflaton into a quasi-stable non-vacuum state.
Aarts +28 more
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Nonminimally-coupled warm Higgs inflation: Metric vs. Palatini formulations
Nuclear Physics B, 2023 In this work, we study the non-minimally-coupled Higgs model in the context of warm inflation scenario on both metric and Palatini approaches. We particularly consider a dissipation parameter of the form Γ=CTT with CT being a coupling parameter and focus
Thammarong Eadkhong +3 more
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Theoretical and observational prescription of warm-inflation in FLRW universe with torsion
European Physical Journal C: Particles and Fields, 2023 The paper deals with Warm Inflationary scenario in FLRW with torsion both from theoretical and observational point of view. In the background of flat FLRW model the Hubble parameter is found to be proportional to the torsion function and warm inflation ...
Madhukrishna Chakraborty +3 more
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Does fractal universe favour warm inflation: Observational support?
Nuclear Physics B, 2022 The present work examines the possibility of warm inflationary paradigm in the modified gravity theory with fractal geometry. By choosing the normal fluid as radiation fluid and the effective fluid (with the extra term in modified field equation) as the ...
Akash Bose, Subenoy Chakraborty
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Primordial black-hole dark matter via warm natural inflation
Physics Letters B, 2022 We report on a study of the natural warm inflationary paradigm (WNI). We show two important new results arise in this model. One is that the observational constraints on the primordial power spectrum from the cosmic microwave background (CMB) can be ...
Miguel Correa +3 more
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Gravitino cosmology in supersymmetric warm inflation [PDF]
, 2012 In supersymmetric models of warm inflation, the large temperature of the radiation bath produced by the dissipative motion of the inflaton field may induce a significant thermal abundance of potentially dangerous gravitinos. While previous discussions of
Bartrum, Sam +2 more
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Warm $$\beta $$ β -exponential inflation and the swampland conjectures
European Physical Journal C: Particles and Fields, 2023 We investigate theoretical and observational aspects of a warm inflation scenario driven by the $$\beta $$ β -exponential potential, which generalizes the well-known power law inflation.
F. B. M. dos Santos +4 more
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