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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
semanticscholar +1 more source
European Physical Journal C: Particles and Fields, 2021 We study cosmological inflation and its dynamics in the framework of the Randall–Sundrum II brane model. In particular, we analyze in detail four representative small-field inflationary potentials, namely Natural inflation, Hilltop inflation, Higgs-like ...
Constanza Osses +2 more
doaj +1 more source
Entropic Inflation in Presence of Scalar Field
Universe, 2023 In spirit of the recently proposed four-parameter generalized entropy of apparent horizon, we investigate inflationary cosmology where the matter field inside of the horizon is dominated by a scalar field with a power law potential (i.e., the form of ϕn ...
Sergei D. Odintsov +2 more
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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
semanticscholar +1 more source
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
semanticscholar +1 more source
Inflation in the Rényi cosmology [PDF]
Modern Physics Letters A, 2019 The description of the accelerated phases for the current and primordial cosmos has been obtained in the framework of Rényi cosmology. The results show that corrections to the Friedmann equations, originated from differences between Rényi and Bekenstein ...
H. Moradpour +3 more
semanticscholar +1 more source
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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Inflation in loop quantum cosmology [PDF]
Physical Review D, 2018 We develop a consistent analytic approach to determine the conditions under which slow roll inflation can arise when the inflaton is the same scalar field that is responsible for the bounce in Loop Quantum Cosmology (LQC).
A. Bhardwaj, E. Copeland, J. Louko
semanticscholar +1 more source
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
semanticscholar +1 more source
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
doaj +1 more source