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相关论文: Studies on Some Aspects of the Fundamental Theory …

200 篇论文

Understanding the evolution of entropy in the universe is a fundamental aspect of cosmology. This paper investigates the evolution of entropy in a spatially flat $K=0$ universe, focusing on the contributions of matter, radiation, and dark…

广义相对论与量子宇宙学 · 物理学 2025-07-16 Tanisha Joshi , S. D Pathak

The dynamics of an inhomogeneous universe is studied with the methods of Loop Quantum Cosmology as an example of the quantization of vacuum cosmological spacetimes containing gravitational waves (Gowdy spacetimes). The analysis performed at…

广义相对论与量子宇宙学 · 物理学 2010-02-17 David Brizuela , Guillermo A. Mena Marugan , Tomasz Pawlowski

A better understanding of the formation of large-scale structure in the Universe is arguably the most pressing question in cosmology. The most compelling and promising theoretical paradigm, Inflation + Cold Dark Matter, holds that the…

天体物理学 · 物理学 2009-10-30 Michael S. Turner

The evolution of a turbulent tangle of quantum vortices in presence of finite-size active particles is studied by means of numerical simulations of the Gross-Pitaevskii equation. Particles are modeled as potentials depleting the superfluid…

流体动力学 · 物理学 2020-07-01 Umberto Giuriato , Giorgio Krstulovic

By means of a general classification of the different kinds of matter of nature form a chain from the world of the subatomic particles to the large bodies of the universe, the galaxies. Then, it proposes a new baryonic force for the…

天体物理学 · 物理学 2007-05-23 Mario Everaldo de Souza

The present monograph is devoted to the theory of gravitation derived consequently as joint nonlinear realization of conformal and affine symmetries by means of Cartan differential forms. In the framework of the joint nonlinear realization…

广义相对论与量子宇宙学 · 物理学 2014-02-04 V. N. Pervushin , A. E. Pavlov

In these lectures I highlight some key features of massive neutrinos in the context of cosmology. I first review the thermal history and the free-streaming kinematics of the uniform cosmic background neutrinos. I then describe how…

天体物理学 · 物理学 2017-08-23 Chung-Pei Ma

A thought experiment is formulated to unify quantum mechanics and general relativity in a topological manner. An analysis of the interactions in Nature is then presented. The universal ground state of the constructed theory derives from the…

高能物理 - 理论 · 物理学 2007-05-23 Marco Spaans

The quantum measurement problems are revisited from a new perspective. One of the main ideas of this work is that the basic entities of our world are various types of particles, elementary or composite. It follows that each elementary…

量子物理 · 物理学 2022-09-07 Kenichi Konishi

This letter explores how a reinterpretation of the generalized uncertainty principle as an effective variation of Planck's constant provides a physical explanation for a number of fundamental quantities and couplings. In this context, a…

综合物理 · 物理学 2024-09-02 Ahmed Farag Ali , Jonas Mureika , Elias C. Vagenas , Ibrahim Elmashad

We analyse the evolution of cosmological perturbations which leads to the formation of large voids in the distribution of galaxies. We assume that perturbations are spherical and all components of the Universe - radiation, matter and dark…

宇宙学与河外天体物理 · 物理学 2020-08-04 Maksym Tsizh , Bohdan Novosyadlyj

The universal symmetry, or conservation, of complexity underlies any law or principle of system dynamics and describes the unceasing transformation of dynamic information into dynamic entropy as the unique way to conserve their sum, the…

综合物理 · 物理学 2014-05-15 Andrei P. Kirilyuk

Plausible cause and effect of the big bang model are presented without violating conventional laws of physics. The initial cosmological singularity is resolved by introducing the uncertainty principle of quantum theory. We postulate that,…

天体物理学 · 物理学 2007-05-23 D. C. Choudhury

In an open Friedmann-Robertson-Walker (FRW) space background, we study the classical and quantum cosmological models in the framework of the recently proposed nonlinear massive gravity theory. Although the constraints which are present in…

广义相对论与量子宇宙学 · 物理学 2015-06-04 Babak Vakili , Nima Khosravi

The cosmic vacuum is the wavefunction of the eleven dimensional Planck supermembrane. The Planck wavefunction is the superposition of dimensions from eleven to four dimensional spacetime with decreasing energy and increasing size. The…

综合物理 · 物理学 2007-05-23 Ding-Yu Chung

Entanglement has become central for the characterization of quantum matter both in and out of equilibrium. In a dynamical context entanglement exhibits universal linear temporal growth in generic systems, which stems from the underlying…

统计力学 · 物理学 2020-10-13 Arkadiusz Kosior , Markus Heyl

A theory recently proposed by the author aims to explain decoherence and the thermodynamical behaviour of closed systems within a conservative, unitary, framework for quantum gravity by assuming that the operators tied to the gravitational…

高能物理 - 理论 · 物理学 2010-04-06 Bernard S. Kay

Discontinuous changes in the electronic structure upon infinitesimal changes to the Hamiltonian are demonstrated. Remarkably, these are revealed in one and two electron molecular systems if the realm of the nuclear charge is extended to be…

化学物理 · 物理学 2015-06-16 Aron J. Cohen , Paula Mori-Sánchez

We study the collapse towards the gravitational radius of a macroscopic spherical thick shell surrounding an inner massive core. This overall electrically neutral macroshell is composed by many nested delta-like massive microshells which…

广义相对论与量子宇宙学 · 物理学 2009-11-11 G. L. Alberghi , R. Casadio , D. Fazi

This report provides a brief review of recently developed extended framework for fundamental physics, designated as Quantum Field Mechanics and including causally complete and intrinsically unified theory of explicitly emerging elementary…

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