Results 11 to 20 of about 49,682 (257)

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

Universe, 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

Relativistic Cosmology with an Introduction to Inflation

Universe, 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, Iftikhar Ahmad, Juan Luis García Guirao   +2 more
doaj   +1 more source

Inflation and cosmological constant [PDF]

Physica Scripta, 2021
Abstract In construction of an inflationary model, one usually assumes that the matter sector of the gravitational action is minimally coupled to the background. It means that the matter (inflaton) part of the action is coupled with the same metric of the gravitational part.
openaire   +2 more sources

Pytanie o jedność nauki na przykładzie kosmologii antropicznej

Studia 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

String cosmology and inflation [PDF]

Physical Review D, 1995
Following a suggestion by Gasperini and Veneziano, that String Cosmology can be reconciled with Inflation and, hence, with the Standard Big Bang, we display an analytical solution which possesses four interesting properties: (1) it is non-singular; (2) it distinguishes the dynamics of the external scale factor, $a(t)$, from that of the internal one, $b(
ANGELANTONJ, Carlo, L. AMENDOLA, M. LITTERIO, F. OCCHIONERO   +3 more
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Tachyon field in loop cosmology

Physics Letters B, 2020
The evolutionary pictures of tachyon field in modified loop cosmology have been investigated. We present the dynamical behavior of the tachyon field associated with an exponential potential and find that the pre-inflation dynamics are very similar in ...
Kui Xiao
doaj   +1 more source

Topics in Cosmology—Clearly Explained by Means of Simple Examples

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

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, Nelson Videla, Grigoris Panotopoulos   +2 more
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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, Simone D’Onofrio, Tanmoy Paul   +2 more
doaj   +1 more source

New Anisotropic Exact Solution in Multifield Cosmology

Universe, 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