Results 71 to 80 of about 531,343 (389)
Infinity in string cosmology: A review through open problems [PDF]
, 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 +2 more sources
f(T) teleparallel gravity and cosmology [PDF]
Reports on progress in physics. Physical Society, 2015 Over recent decades, the role of torsion in gravity has been extensively investigated along the main direction of bringing gravity closer to its gauge formulation and incorporating spin in a geometric description.
Yi-Fu Cai +3 more
semanticscholar +1 more source
Bouncing cosmology in f(Q) symmetric teleparallel gravity [PDF]
The European Physical Journal Plus, 2020 We consider f(Q) extended symmetric teleparallel cosmologies, where Q is the non-metricity scalar, and constrain its functional form through the order reduction method.
F. Bajardi, D. Vernieri, S. Capozziello
semanticscholar +1 more source
Light trajectory and shadow shape in the rotating naked singularity
European 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
Chaos and Order: Contemporary Cosmology and Myth
Etnoantropološki 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
Journal 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
Early and late universe holographic cosmology from a new generalized entropy
Physics 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
New Journal of Physics, 2014 Networks often represent systems that do not have a long history of studies in traditional fields of physics, albeit there are some notable exceptions such as energy landscapes and quantum gravity. Here we consider networks that naturally arise in cosmology.
Boguñá, Marián +2 more
openaire +4 more sources
SSRN Electronic Journal, 2023 This paper presents the perspective that universe is relative. The universe, which changes according to the observer’s proper time, is dynamic. Generally, the universe expands, but if the observer accelerates enough, contraction is also possible. The Hubble parameter merely represents that change.
openaire +2 more sources
International Journal of Modern Physics D, 1999 The notion of time in cosmology is revealed through an examination of transition matrix elements of radiative processes occurring in the cosmos. To begin with, the very concept of time is delineated in classical physics in terms of correlations between the succession of configurations which describe a process and a standard trajectory called the clock.
Brout, Hyman Robert, Parentani, Renaud
openaire +5 more sources