搜索结果: 31-45 共查到“理学 General relativity”相关记录66条 . 查询时间(0.039 秒)
L.R.S. Bianchi type II Stiff Fluid cosmological model with Decaying Vacuum Energy Density $\Lambda$ in general relativity
LRS Bianchi type II models Cosmological constant
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2010/12/20
Locally rotationally symmetric (L.R.S.) Bianchi type II stiff fluid cos-mological model is investigated. To get the deterministic model of the universe, we have assumed a condition A = Bm between metr...
Stationary, Axisymmetric Neutron Stars with Meridional Circulation in General Relativity
Stationary Axisymmetric Neutron Stars Meridional Circulation General Relativity
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2010/12/20
We present the first stationary, axisymmetric neutron star models with meridional circulation in general relativity. For that purpose, we developed GRNS, a new code based on a fixed point iteration.
Complementarity of Kinematics and Geometry in General Relativity Theory
Complementarity of Kinematics Geometry General Relativity Theory
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2010/12/20
Relations between kinematics, geometry and law of reference frame motion are considered. We show, that kinematical tensors define geometry up to a space functiona arbitrariness when integrability cond...
Complementarity of Weak Lensing and Peculiar Velocity Measurements in Testing General Relativity
Complementarity of Weak Lensing Peculiar Velocity Measurements General Relativity
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2010/11/12
We explore the complementarity of weak lensing and galaxy peculiar velocity measurements to
better constrain modifications to General Relativity. We find no evidence for deviations from GR on cosmolo...
Null Asymptotics of Solutions of the Einstein-Maxwell Equations in General Relativity and Gravitational Radiation
Null Asymptotics of Solutions Einstein-Maxwell Equations General Relativity Gravitational Radiation
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2010/12/21
We prove that for spacetimes solving the Einstein-Maxwell (EM) equations,the electromagnetic eld contributes at highest order to the nonlinear memory e ect of gravitational waves.
Modified general relativity as a model for quantum gravitational collapse
Modified general relativity model quantum gravitational collapse
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2010/12/20
We study a class of Hamiltonian deformations of the massless Einstein-Klein-Gordon system in spherical symmetry for which the Dirac constraint algebra closes. The system may be regarded as providing e...
Dynamical effects of General Relativity on the satellite-to-satellite range and range-rate in the GRACE mission
Dynamical effects of General Relativity satellite-to-satellite range range-rate GRACE mission
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2010/12/20
In this Letter, by reconstructing the Om diagnostic and the deceleration parameter q from
the latest Union2 Type Ia supernova sample with and without the systematic error along with
the baryon acous...
Dynamical effects of General Relativity on the satellite-to-satellite range and range-rate in the GRACE mission
Experimental studies of gravity Experimental tests of gravitational theories
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2010/12/20
We numerically investigate the impact of the General Theory of Relativity (GTR) on the satellite-to-satellite range ρ and range-rate ρ˙ of the twin GRACE A/B spacecrafts through their dynamical equati...
Some peculiarities of motion of neutral and charged test particles in the field of a spherically symmetric charged object in General Relativity
Motions classification Mass potential Stability conditions
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2010/12/20
We propose the method of investigation of radial motions for charged and neutral test particles in the Reissner-Nordstr¨om field by means of mass potential. In this context we analyze special features...
On the Stable Spherically-Symmetric Charged Dust Configurations in General Relativity
Stable Spherically-Symmetric Charged Dust Configurations General Relativity
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2010/12/20
The radial motion of a self-graviting charged dust and stability condition of the static
charged dust spheres are considered. The stability is possible for the bound states of the weakly charged laye...
The Embedding of General Relativity in Five-Dimensional Canonical Space: A Short History and a Review of Recent Physical Progress
Cosmological Constant Higher Dimensions Particle Dynamics
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2010/12/20
Einstein theory can be embedded in Kaluza-Klein theory, and in particular all 4D vacuum solutions can be embedded in 5D (pure) canonical space where spacetime is independent of the extra coordinate.
On some models of geometric noncommutative general relativity
geometric noncommutative general relativity
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2010/12/22
Using Fedosov theory of deformation quantization of endomorphism bundle we construct several models of pure geometric, deformed vacuum gravity. Deformations of Einstein-Hilbert and Palatini actions ar...
On the Possibility of Supertasks in General Relativity
Computation spacetimes General Relativity
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2011/9/8
Malament-Hogarth spacetimes are the sort of models within general relativity that seem to allow for the possibility of supertasks. There are various ways in which these spacetimes might be considered ...
Cylindrically Symmetric Scalar Field and its Lyapunov stability in General Relativity
Cylindrically Symmetric Scalar Field Lyapunov stability
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2010/11/26
In this paper we found an Exact solution for massless scalar field with cosmological constant.This exact solution generalized the Levi-Civita vacuum solution[8] to a massless scalar field,with a cosmo...
Equations of motion in General Relativity and Quantum Mechanics
non-geodesic motion Dirac equation equations of motion Maxwell-Boltzmann distribution
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2010/12/16
In a previous article a relationship was established between the linearized metrics of General Relativity associated with geodesics and the Dirac Equation of quantum mechanics.