Results 31 to 40 of about 359,649 (249)
Observational constraints on warm inflation in loop quantum cosmology [PDF]
Journal of Cosmology and Astroparticle Physics, 2019 By incorporating quantum aspects of gravity, Loop Quantum Cosmology (LQC) provides a self-consistent extension of the inflationary scenario, allowing for modifications in the primordial inflationary power spectrum with respect to the standard General ...
M. Benetti, L. Graef, R. O. Ramos
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Inflation in multidimensional quantum cosmology [PDF]
Physical Review D, 1996 We extend to multidimensional cosmology Vilenkin's prescription of tunnelling from nothing for the quantum origin of the observable Universe. Our model consists of a $D+4$-dimensional spacetime of topology ${\cal R}\times {\cal S}^3 \times{\cal S}^D$, with a scalar field (``chaotic inflaton'') for the matter component.
Giuseppe Pollifrone +3 more
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Palatini R 2 quintessential inflation [PDF]
Journal of Cosmology and Astroparticle Physics, 2022 We construct a model of quintessential inflation in Palatini R 2 gravity employing a scalar field with a simple exponential potential and coupled to gravity with a running non-minimal coupling.
K. Dimopoulos +3 more
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How Generic Is Eternal Inflation?
Sci, 2022 Everlasting inflation has far-reaching implications for cosmology and the standing of self-localizing inferences made by observers, which have been subjects of renewed interest in light of the growing acceptance of theory landscapes and the attendant ...
Ross Greenwood, Anthony Aguirre
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Massive neutrino self-interactions and inflation [PDF]
Journal of Cosmology and Astroparticle Physics, 2022 Certain inflationary models like Natural inflation (NI) and Coleman-Weinberg inflation (CWI) are disfavoured by cosmological data in the standard ΛCDM+r model (where r is the scalar-to-tensor ratio), as these inflationary models predict the regions in ...
Shouvik Roy Choudhury +2 more
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Pre-inflationary dynamics of Starobinsky inflation and its generization in loop quantum Brans-Dicke cosmology [PDF]
Journal of Cosmology and Astroparticle Physics, 2018 Recently, the nonperturbative quantization scheme of loop quantum gravity has been extended to the Brans-Dicke theory and the corresponding loop quantum Brans-Dicke cosmology has been derived, which provides an essential platform to explore inflationary ...
Wei-Jian Jin, Yong-Liang Ma, Tao Zhu
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Reheating in holographic cosmology and connecting to Λ-MSSM constructions for particle physics
Journal of High Energy Physics, 2021 In this paper we model the transition from the non-geometric holographic cosmology regime, to the usual radiation dominated (RD) cosmology, known as reheating in the case of (perturbative) inflation.
Horatiu Nastase
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Inflation and precision cosmology [PDF]
Brazilian Journal of Physics, 2004 A brief review of inflation is presented. After having demonstrated the generality of the inflationary mechanism, the emphasize is put on its simplest realization, namely the single field slow-roll inflationary scenario. Then, it is shown how, concretely, one can calculate the predictions of a given model of inflation.
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A built-in inflation in the $$f(T)$$ f ( T ) -cosmology [PDF]
The European Physical Journal C, 2014 LaTeX2e: 19 pages, 9 figures, 1 table.
Gamal G. L. Nashed +2 more
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Singularities in Inflationary Cosmological Models
Universe, 2021 Due to the accelerated expansion of the universe, the possibilities for the formation of singularities has changed from the classical Big Bang and Big Crunch singularities to include a number of new scenarios. In recent papers it has been shown that such
Leonardo Fernández-Jambrina
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