Results 51 to 60 of about 416,864 (290)
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
Inflation from supersymmetric quantum cosmology [PDF]
Physical Review D, 2010 14 pages, latex2e, To appear in Phys.
Socorro, J., D'Oleire, Marco
openaire +2 more sources
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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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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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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Reheating via gravitational particle production in simple models of quintessence or $\Lambda$CDM inflation [PDF]
, 2017 We have tested some simple $\Lambda$CDM (the same test is also valid for quintessence) inflation models, imposing that they match with the recent observational data provided by the BICEP and Planck's team and leading to a reheating temperature, which is ...
Haro, Jaume, Saló, Llibert Aresté
core +4 more sources
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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Cosmological perturbations without inflation [PDF]
Classical and Quantum Gravity, 2016 A particularly attractive feature of inflation is that quantum fluctuations inthe inflaton field may have seeded inhomogeneities in the cosmic microwavebackground (CMB) and the formation of large-scale structure. In this paper,we demonstrate that a scalar field with zero active mass, i.e., with anequation of state $\rho+3p=0$, where $\rho$ and $p$ are ...
openaire +4 more sources
Some clarifications on the duration of inflation in loop quantum cosmology [PDF]
, 2017 The prediction of a phase of inflation whose number of e-folds is constrained is an important feature of loop quantum cosmology. This work aims at giving some elementary clarifications on the role of the different hypotheses leading to this conclusion ...
B. Bolliet +3 more
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Inflation with a class of concave inflaton potentials in Randall–Sundrum model
European Physical Journal C: Particles and Fields, 2020 We investigate inflation with a class of concave inflaton potentials of the form $$\sim \phi ^n$$ ∼ϕn ...
Ngo Phuc Duc Loc
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