Results 11 to 20 of about 3,204 (220)
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.
Iftikhar Ahmad, Juan L G Guirao
exaly +4 more sources
Geometrothermodynamic Cosmology [PDF]
Entropy, 2023 We review the main aspects of geometrothermodynamics, a formalism that uses contact geometry and Riemannian geometry to describe the properties of thermodynamic systems.
Orlando Luongo, Hernando Quevedo
doaj +4 more sources
Physical and Relativistic Numerical Cosmology [PDF]
Living Reviews in Relativity, 1998 In order to account for the observable Universe, any comprehensive theory or model of cosmology must draw from many disciplines of physics, including gauge theories of strong and weak interactions, the hydrodynamics and microphysics of baryonic matter ...
Peter Anninos
doaj +4 more sources
Entropy, 2017 Jüttner used the conventional theory of relativistic statistical mechanics to calculate the energy of a relativistic ideal gas in 1911. An alternative derivation of the energy of a relativistic ideal gas was published by Horwitz, Schieve and Piron in ...
John R Fanchi, Fanchi John R
exaly +3 more sources
On General-Relativistic Lagrangian Perturbation Theory and Its Non-Perturbative Generalization
Universe, 2022 The Newtonian Lagrangian perturbation theory is a widely used framework to study structure formation in cosmology in the nonlinear regime. We review a general-relativistic formulation of such a perturbation approach, emphasizing results on an already ...
Thomas Buchert +2 more
doaj +3 more sources
BACK-REACTION IN RELATIVISTIC COSMOLOGY [PDF]
The Thirteenth Marcel Grossmann Meeting, 2013 We introduce the concept of back-reaction in relativistic cosmological modeling. Roughly speaking, this can be thought of as the difference between the large-scale behavior of an inhomogeneous cosmological solution of Einstein's equations, and a homogeneous and isotropic solution that is a best-fit to either the average of observables or dynamics in ...
CLIFTON, TA, TIMOTHY CLIFTON
openaire +5 more sources
ON THE FOUNDATIONS OF RELATIVISTIC COSMOLOGY [PDF]
Proceedings of the National Academy of Sciences of the United States of America, 1929 H P Robertson
exaly +3 more sources
Optimal control models of Einstein’s field equations [PDF]
ERU Research Journal, 2023 It is shown that some problems of Einstein’s field equations of the theory of General Relativity can be modeled as optimal control problems. The advantages of adopting such an approach are explained. As a demonstration of this interdisciplinary research,
Moutaz Ramadan, Salah Haggag
doaj +1 more source
Relativistic Ermakov–Milne–Pinney Systems and First Integrals
Physics, 2021 The Ermakov–Milne–Pinney equation is ubiquitous in many areas of physics that have an explicit time-dependence, including quantum systems with time-dependent Hamiltonian, cosmology, time-dependent harmonic oscillators, accelerator dynamics, etc.
Fernando Haas
doaj +1 more source
Odessa Astronomical Publications, 2016 We study the possible types of future singularities in the isotropic homogeneous cosmological models for the arbitrary equation of state of the contents of the Universe.
S. L. Parnovsky
doaj +1 more source