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Relativistic Cosmology with an Introduction to Inflation [PDF]

open access: yesUniverse, 2021
In this review article, the study of the development of relativistic cosmology and the introduction of inflation in it as an exponentially expanding early phase of the universe is carried out.
Muhammad Zahid Mughal   +2 more
doaj   +3 more sources

Looking inside the Swampland from Warm Inflation: Dissipative Effects in De Sitter Expansion

open access: yesUniverse, 2023
This paper reviews the theoretical and phenomenological implications of the swampland conjectures from the perspective of inflationary cosmology, focusing on warm inflation.
Arjun Berera, Jaime Calderón-Figueroa
doaj   +1 more source

Pytanie o jedność nauki na przykładzie kosmologii antropicznej

open access: yesStudia Philosophiae Christianae, 2023
Given the ongoing process of the differentiation of sciences, it is worth posing a question about the possibility of them being integrated. This matter will be explored with reference to anthropic cosmology.
Sławomir Leciejewski
doaj   +1 more source

The separate-universe approach and sudden transitions during inflation [PDF]

open access: yesJournal of Cosmology and Astroparticle Physics, 2023
The separate-universe approach gives an intuitive way to understand the evolution of cosmological perturbations in the long-wavelength limit. It uses solutions of the spatially-homogeneous equations of motion to model the evolution of the inhomogeneous ...
Joseph H. P. Jackson   +5 more
semanticscholar   +1 more source

Superstring cosmology — a complementary review [PDF]

open access: yesJournal of Cosmology and Astroparticle Physics, 2023
In this review, a number of approaches to superstring cosmology which make use of key features which distinguish string theory from point particle theories are discussed, with particular emphasis on emergent scenarios.
R. Brandenberger
semanticscholar   +1 more source

Topics in Cosmology—Clearly Explained by Means of Simple Examples

open access: yesUniverse, 2022
This is a very comprehensible review of some key issues in modern cosmology. Simple mathematical examples and analogies are used, whenever available. The starting point is the well-known Big Bang cosmology (BBC).
Jaume de Haro, Emilio Elizalde
doaj   +1 more source

Uphill inflation [PDF]

open access: yesJournal of Cosmology and Astroparticle Physics, 2023
Primordial black holes (PBH) may form from large cosmological perturbations, produced during inflation when the inflaton's velocity is sufficiently slowed down. This usually requires very flat regions in the inflationary potential.
Vadim Briaud, V. Vennin
semanticscholar   +1 more source

New Anisotropic Exact Solution in Multifield Cosmology

open access: yesUniverse, 2021
In the case of two-scalar field cosmology, and specifically for the Chiral model, we determine an exact solution for the field equations with an anisotropic background space.
Andronikos Paliathanasis
doaj   +1 more source

Reheating in small-field inflation on the brane: the swampland criteria and observational constraints in light of the PLANCK 2018 results

open access: yesEuropean 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

open access: yesUniverse, 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
doaj   +1 more source

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