搜索结果: 1-15 共查到“知识库 物理学 the universe”相关记录44条 . 查询时间(0.156 秒)
Isotropy of the early universe from CMB anisotropies
The cosmic microwave radiation cosmological parameters scattering baryon density
2014/12/20
The acoustic peak in the cosmic microwave background power spectrum is sensitive to causal processes and cosmological parameters in the early universe up to the time of last scattering. We provide lim...
Bulk Viscous LRS Biachi-I Universe with variable $G$ and decaying $ニ$
LRS Bianchi type I Universe, Bulk viscosity, Variable G and
2011/8/26
The present study deals with spatially homogeneous and totally anisotropic locally rotationally symmetric (LRS) Bianchi type I cosmological model with variable G and in presence of imperfect fluid. ...
Fractional Action Cosmology: Some Dark Energy Models in Emergent, Logamediate and Intermediate Scenarios of the Universe
Fractional Action Cosmology Dark Energy Model Emergent Logamediate Intermediate Scenarios of the Universe
2011/8/2
Abstract: In the framework of Fractional Action Cosmology, we have reconstructed the scalar potentials and scalar fields, namely, quintessence, phantom, tachyon, k-essence, DBI-essence, Hessence, dila...
The Effects of Tachyonic and Phantom Fields in the Intermediate and Logamediate Scenarios of the Anisotropic Universe
Tachyonic and Phantom Fields Universe
2011/9/2
In this work, we have analyzed two scenarios namely, “intermediate” and “logamadiate” scenarios for closed, open and flat anisotropic universe in presence of phantom field, normal tachyonic field and ...
This article introduces Universal Quantum Relativity which is a simple Theory of Everything. It relies on an ultimate doctrine that is the absence of absolute existence. This generalizes relativity pr...
Do we live in the universe successively dominated by matter and antimatter?
matter and antimatter universe
2011/8/30
We wonder if a cyclic universe may be dominated alternatively by matter and antimatter. Such a scenario demands a mechanism for transformation of matter to antimatter (or antimatter to matter) during ...
One-loop quantum gravity repulsion in the early Universe
One-loop quantum gravity the early Universe
2010/12/27
Perturbative quantum gravity is used to compute the lowest order corrections to the classical spatially flat cosmological FLRW solution (for the radiation). The presented approach is analogous to the...
On Isotropic Turbulence in the Dark Fluid Universe
Isotropic Turbulence Dark Fluid Universe
2010/12/24
As first part of this work, experimental information about the decay of isotropic turbulence in ordinary hydrodynamics, u^2(t) proportional to t^{-6/5}, is used as input in FRW equations in order to i...
Inflation of Bianchi type-$\Rmnum{7}_0$ Universe with Dirac Field in Einstein-Cartan theory
Universe Dirac Field Einstein-Cartan theory
2010/12/23
We discuss the Bianchi type-$\Rmnum{7}_0$ cosmology with Dirac field in Einstein-Cartan theory. We obtain the equations of Dirac field and gravitational field in Einstein-Cartan theory. We find a Bian...
Cosmological observations on the largest scales exhibit a solid record of unexpected anomalies and alignments, apparently pointing towards a large scale violation of statistical isotropy. These inclu...
The influence of inhomogeneities on the large-scale expansion of the universe
the large-scale expansion universe
2010/12/27
The evolution of an inhomogeneous universe composed entirely of matter is followed from an early, nearly uniform state until the time when the inhomogeneities have begun to grow large. The particular...
Institute of Physics, Pedagogical University, ul. Podchorazych 2, Cracow,Poland, and Copernicus Center for Interdisciplinary Studies, ul. Slawkowska 17, Cracow, Poland
The Distribution of Coalescing Compact Binaries in the Local Universe: Prospects for Gravitational-Wave Observations
Distribution Compact Binaries Local Universe Prospects Gravitational-Wave Observations
2010/12/21
Merging compact binaries are the most viable and best studied candidates for gravitational wave
(GW) detection by the fully operational network of ground-based observatories. In anticipation of the f...
One-loop quantum cosmological correction to the gravitational constant using the kink solution in de Sitter universe
One-loop correction kink energy shape invariance zeta func-tion regularization
2010/12/20
In this paper, we show the equivalence between a classical static scalar field theory and the (closed) de Sitter cosmological model whose potential represents shape invariance property.
On Isotropic Turbulence in the Dark Fluid Universe
Isotropic Turbulence Dark Fluid Universe
2010/12/21
As first part of this work, experimental information about the decay of isotropic turbulence in
ordinary hydrodynamics, u2(t) / t−6/5, is used as input in FRW equations in order to investigate ...