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We investigate a class of cosmological solutions of Einstein's field equations in higher dimensions with a cosmological constant and an ideal fluid matter distribution as a source. We discuss the dynamical evolution of the universe subject…

广义相对论与量子宇宙学 · 物理学 2013-02-15 Ozgur Akarsu , Tekin Dereli

The general world model for homogeneous and isotropic universe has been roposed. For this purpose, we introduce a global and fiducial system of reference (world reference frame) constructed on a 5-dimensional space-time that is embedding…

天体物理学 · 物理学 2008-03-04 Chan-Gyung Park

Universe structure emerges in the unreduced, complex-dynamical interaction process with the simplest initial configuration (two attracting homogeneous fields). The unreduced interaction analysis avoiding any perturbative model gives…

综合物理 · 物理学 2015-03-20 Andrei P. Kirilyuk

Universe structure emerges in the unreduced, complex-dynamic interaction process with the simplest initial configuration (two attracting homogeneous fields, quant-ph/9902015). The unreduced interaction analysis gives intrinsically creative…

综合物理 · 物理学 2007-05-23 Andrei P. Kirilyuk

We live in a 3+1 space-time that is intended as a description of the universe with three space dimensions and one time dimension. Space-time dimensionality seems so natural that it is rarely criticized. Experiments and the highly successful…

综合物理 · 物理学 2009-11-10 Giorgio Fontana

We will look for an implementation of new symmetries in the space-time structure and their cosmological implications. This search will allow us to find a unified vision for electrodynamics and gravitation. We will attempt to develop a…

综合物理 · 物理学 2011-11-10 Claudio Nassif

Classical cosmology exhibits a particular kind of scaling symmetry. The dynamics of the invariants of this symmetry forms a system that exhibits many of the features of open systems such as the non-conservation of mechanical energy and the…

广义相对论与量子宇宙学 · 物理学 2024-03-13 Sean Gryb , David Sloan

When four-dimensional general relativity is embedded in an unconstrained man-ner in a fifth dimension, the physical quantities of spacetime can be interpreted as geometrical properties related to the extra dimension. It has become…

广义相对论与量子宇宙学 · 物理学 2010-06-18 Paul S. Wesson

The relativity of cosmic time is developed within the framework of Cosmological Relativity in five dimensions of space, time and velocity. A general linearized metric element is defined to have the form $ds^2 = (1+\phi) c^2 dt^2 - dr^2 +…

综合物理 · 物理学 2016-05-30 Firmin J. Oliveira

The semi-classical approach to the quantum geometrodynamical model is used for the description of the properties of the universe on extremely small spacetime scales. Quantum theory for a homogeneous, isotropic and closed universe is…

广义相对论与量子宇宙学 · 物理学 2009-10-21 V. E. Kuzmichev , V. V. Kuzmichev

In this thesis the cosmological constant is investigated from two points of view. First, we study the influence of a time-dependent cosmological constant on the late-time expansion of the universe. Thereby, we consider several combinations…

高能物理 - 理论 · 物理学 2007-05-23 Florian Bauer

Space-Time in general relativity is a dynamical entity because it is subject to the Einstein field equations. The space-time metric provides different geometrical structures: conformal, volume, projective and linear connection. A deep…

广义相对论与量子宇宙学 · 物理学 2008-11-26 Ignacio Sanchez-Rodriguez

The properties of universes are explored that are entirely in the interior of black holes in another universe, a `mother universe'. It is argued that these models offer a paradigm that may shed a new light on old cosmological problems. The…

广义相对论与量子宇宙学 · 物理学 2022-10-17 Herwig Dejonghe

In cosmology based on general relativity, the universe is modeled as a fluid. The transition from the Einstein field equation to its large-scale (cosmological) version is thus analogous to the transition, for a system consisting of a large…

综合物理 · 物理学 2018-10-18 Gregory Ryskin

It is very likely that the quantum description of spacetime is quite different from what we perceive at large scales, $l\gg (G\hbar/c^3)^{1/2}$. The long wave length description of spacetime, based on Einstein's equations, is similar to the…

广义相对论与量子宇宙学 · 物理学 2009-11-10 T. Padmanabhan

A new, very different physical model of the universe is proposed. Its virtues include unifying relativity and quantum mechanics, and particles with de Broglie waves. It also appears to provide a truly unified physical basis for…

综合物理 · 物理学 2008-02-03 Ben Kristoffen

Examination of the Einstein energy-momentum relationship suggests that simple unbound forms of matter exist in a four-dimensional Euclidean space. Position, momentum, velocity, and other vector quantities can be expressed as Euclidean…

量子物理 · 物理学 2007-05-23 Paul J. Freitas

We explore the possibility that the entire departure of galactic rotational velocities from their luminous Newtonian expectation be cosmological in origin, and show that within the framework of conformal gravity (but not Einstein gravity…

天体物理学 · 物理学 2016-08-30 Philip D. Mannheim

One can make the very simple hypothesis that the Universe is the inside of an hypersphere in 4 dimensions, where our 3-dimensional world consists of hypersurfaces at different radii. Based on this assumption it is possible to show that…

综合物理 · 物理学 2007-05-23 Jose B. Almeida

We present a theory based upon the treatment of the gravitational field as a sea of gravity quanta, as defined elsewhere. The resultant model for the Universe is a static one, like Einstein first saw, with a new feature: a local shrinking…

综合物理 · 物理学 2015-06-26 Antonio Alfonso-Faus
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