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For millennia, humanity has relied exclusively on light$\unicode{x2014}$initially visible light and, later, broader and broader portions of the electromagnetic spectrum$\unicode{x2014}$to observe the universe. In the past decade, a…

广义相对论与量子宇宙学 · 物理学 2026-04-20 Lucas Martins Barreto Alves

Recent observations provide strong evidence that the universe is accelerating. This confronts theory with a severe challenge. Explanations of the acceleration within the framework of general relativity are plagued by difficulties. General…

天体物理学 · 物理学 2008-11-26 Roy Maartens

Is it actually possible to interpret gravitation as space's property in a pure classical way. Then, we note that extended self-gravitating system equilibrium depends directly on the number of dimension of the space in which it evolves.…

天体物理学 · 物理学 2009-11-11 Jerome Perez

It is a remarkable fact that all processes occurring in the observable Universe are irreversible, whereas the equations through which the fundamental laws of physics are formulated are invariant under time reversal. The emergence of…

综合物理 · 物理学 2015-05-28 Gustavo E. Romero , Daniela Pérez

Gravity theory is the basis of modern cosmological models. Thirring-Feynman's tensor field approach to gravitation is an alternative to General Relativity (GR). Though Field Gravity (FG) approach is still developing subject, it opens new…

广义相对论与量子宇宙学 · 物理学 2016-08-31 Yurij Baryshev

It is a remarkable fact that all processes occurring in the observable Universe are irreversible, whereas the equations in which the laws of physics are formulated are invariant under time reversal. The emergency of irreversibility from the…

科普物理 · 物理学 2009-12-10 Gustavo E. Romero

The gravitational equations were derived in general relativity (GR) using the assumption of their covariance relative to arbitrary transformations of coordinates. It has been repeatedly expressed an opinion over the past century that such…

广义相对论与量子宇宙学 · 物理学 2024-08-07 Alexander P. Sobolev

The alignments between galaxies, their underlying matter structures, and the cosmic web constitute vital ingredients for a comprehensive understanding of gravity, the nature of matter, and structure formation in the Universe. We provide an…

I describe the conceptual and mathematical basis of an approach which describes gravity as an emergent phenomenon. Combining principle of equivalence and principle of general covariance with known properties of local Rindler horizons,…

广义相对论与量子宇宙学 · 物理学 2009-11-22 T. Padmanabhan

By carefully analyzing the geodesic motion of a test particle in the bulk of brane worlds, we identify an extra force which is recognized in spacetime of one lower dimensions as a non-gravitational force acting on the particle. Such extra…

高能物理 - 理论 · 物理学 2009-10-31 Donam Youm

Through modeling the universe as a symplectic 3-brane embedded in the bulk of N = 2 five-dimensional ungauged supergravity theory, the entire evolution of the universe can be interpreted from inflation to late-time acceleration without…

广义相对论与量子宇宙学 · 物理学 2023-04-19 Moataz H. Emam , Safinaz Salem

Galaxy formation is at the heart of our understanding of cosmic evolution. Although there is a consensus that galaxies emerged from the expanding matter background by gravitational instability of primordial fluctuations, a number of…

星系天体物理 · 物理学 2020-06-10 Pratika Dayal , Andrea Ferrara

Based on the model of a "soft" cellular space and deterministic quantum mechanics developed previously, the scattering of a free moving particle by structural units of the space -- superparticles -- is studied herein. The process of energy…

高能物理 - 理论 · 物理学 2007-05-23 Volodymyr Krasnoholovets

The origin of rotation or spin of objects, from stars to galaxies, is still an unanswered question. Even though there are models which try to explain this, none of them can account for the initial impulse that gave rise to this spin. In…

综合物理 · 物理学 2011-11-17 C Sivaram , Kenath Arun

For nearly a century, Einstein's theory of gravity has been the standard theory for describing gravitational phenomena in our universe. Along with its successes, limitations of the theory from theoretical (e.g., singularities) and…

广义相对论与量子宇宙学 · 物理学 2021-08-10 Sourabh Nampalliwar

We develop a unified, dynamical-systems narrative of the universe that traces a continuous chain of structure formation from the Big Bang to contemporary human societies and their artificial learning systems. Rather than treating cosmology,…

适应与自组织系统 · 物理学 2025-12-23 Pradeep Singh , Mudasani Rushikesh , Bezawada Sri Sai Anurag , Balasubramanian Raman

The main purpose of this paper is to seek a mechanical interpretation of gravitational phenomena. We suppose that the universe may be filled with a kind of fluid which may be called the $\Omega (0)$ substratum. Thus, the inverse-square law…

综合物理 · 物理学 2017-12-29 Xiao-Song Wang

The physical processes that determine the properties of our everyday world, and of the wider cosmos, are determined by some key numbers: the 'constants' of micro-physics and the parameters that describe the expanding universe in which we…

物理学史与哲学 · 物理学 2018-01-23 Mario Livio , Martin J. Rees

The mysterious `dark energy' needed to explain the current observations, poses a serious confrontation between fundamental physics and cosmology. The present crisis may be an outcome of the (so far untested) prediction of the general theory…

广义相对论与量子宇宙学 · 物理学 2020-05-19 Ram Gopal Vishwakarma

Why is the universe comprehensible? How is it that we can come to know its regularities well-enough to exploit them for our own gain? In this essay I argue that the nature of our comprehension lies in the mutually agreed upon methodology we…

物理学史与哲学 · 物理学 2020-11-16 Ian T. Durham
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