Results 41 to 50 of about 330,022 (192)

Infinity in string cosmology: A review through open problems [PDF]

open access: yes, 2016
We review recent developments in the field of string cosmology with particular emphasis on open problems having to do mainly with geometric asymptotics and singularities.
Antoniadis, Ignatios, Cotsakis, Spiros
core   +4 more sources

Modular cosmology

open access: yesPhysical Review D, 1995
An exploratory study of the cosmology of moduli in string theory. Moduli are argued to be natural inflaton fields and lead to a robust inflationary cosmology in which inflation takes place at the top of domain walls. The amplitude of microwave background fluctuations constrains the dynamics responsible for inflation to take place at a higher scale than
Banks, T.   +4 more
openaire   +3 more sources

Cosmology with the Square Kilometre Array by SKA-Japan

open access: yes, 2016
In the past several decades, the standard cosmological model has been established and its parameters have been measured to a high precision, while there are still many of the fundamental questions in cosmology; such as the physics in the very early ...
Ichiki, Kiyotomo   +10 more
core   +1 more source

Chaos and Order: Contemporary Cosmology and Myth

open access: yesEtnoantropološki Problemi, 2020
The paper offers a definition of cosmology and its connections with mythology, and presents contemporary theories as a secular mythical narrative suitable for anthropological analysis. The paper is dedicated to emphasizing the folklore characteristics of
Milan Tomašević
doaj   +1 more source

Parity-violation in bouncing cosmology

open access: yesJournal of High Energy Physics, 2023
We investigate the possibility of the enhancement of parity-violation signal in bouncing cosmology. Specifically, we are interested in deciding which phase should generate the most significant parity-violation signals.
Mian Zhu, Yong Cai
doaj   +1 more source

Cosmological quasiparticles and the cosmological collider

open access: yesPhysical Review D
31 pages, 11 ...
Jay Hubisz   +3 more
openaire   +2 more sources

Light trajectory and shadow shape in the rotating naked singularity

open access: yesEuropean Physical Journal C: Particles and Fields, 2022
In this paper, we investigate the light trajectories and shadow properties in the rotating version of null naked singularity (NNS) spacetime which is derived using the Newman–Janis algorithm without complexification method.
Vishva Patel   +4 more
doaj   +1 more source

The cosmology of fluctuations [PDF]

open access: yesChaos, Solitons & Fractals, 2003
We review a cosmology in which particles are fluctuationally created from a background Zero Point Field. This cosmology is consistent with recent observations of an ever expanding and accelerating universe, as also the recently confirmed evolution of the fine structure constant.
openaire   +3 more sources

Early and late universe holographic cosmology from a new generalized entropy

open access: yesPhysics Letters B, 2022
We propose a new four-parameter entropy function that generalizes the Tsallis, Rényi, Barrow, Sharma-Mittal, Kaniadakis and Loop Quantum Gravity entropies for suitable limits of the parameters.
Shin'ichi Nojiri   +2 more
doaj   +1 more source

The Structure and Interpretation of Cosmology: Part I - General Relativistic Cosmology

open access: yes, 2004
The purpose of this work is to review, clarify, and critically analyse modern mathematical cosmology. The emphasis is upon mathematical objects and structures, rather than numerical computations. This paper concentrates on general relativistic cosmology.
Arp   +24 more
core   +2 more sources

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