搜索结果: 1-15 共查到“理学 spherically”相关记录22条 . 查询时间(0.072 秒)
Time dependent embedding of spherically symmetric Rindler spacetime
anisotropic cosmic fluid MS energy curved Rindler ric heat flux
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2012/2/21
An anisotropic cosmic fluid with radial heat flux which sources a time dependent Rindler geometry is investigated. Even though its energy density $\rho$ is positive, the radial and transversal pressur...
Static and spherically symmetric black holes in $f(R)$ theories
Static spherically symmetric black holes theories
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2011/10/14
We study some features of static and spherically symmetric solutions (SSS) with a horizon in $f(R)$ theories of gravitation by means of a near-horizon analysis. A necessary condition for an $f(R)$ the...
Enlargement of the Transformation Group of General Relativity: Spherically Symmetric Solutions
Gravity theory, transformation groups Lagrangians fi eld equations stellar model external spherically symmetric solutions
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2011/10/18
A theory has been presented previously in which the geometrical structure of a real four-dimensional space time manifold is expressed by a real orthonormal tetrad, and the group of diffeomorphisms is ...
The Wave Equation in a General Spherically Symmetric Particlelike Geometry
The Wave Equation Spherically Symmetric Particlelike Geometry Analysis of PDEs
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2011/7/28
The Wave Equation in a General Spherically Symmetric Particlelike Geometry.
The Wave Equation in a General Spherically Symmetric Black Hole Geometry
The Wave Equation Spherically Symmetric Black Hole Geometry General Relativity and Quantum Cosmology
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2011/7/28
The Wave Equation in a General Spherically Symmetric Black Hole Geometry.
The uniqueness in the inverse problem for transmission eigenvalues for the spherically-symmetric variable-speed wave equation
transmission eigenvalues inverse spectral problem variable-speed wave equation
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2011/7/26
The uniqueness in the inverse problem for transmission eigenvalues for the spherically-symmetric variable-speed wave equation.
Relativistic analogue of the D'Alembert principle of virtual displacements and the effective actions for the spherically-symmetric charged dust shell in General Relativity
Relativistic analogue D'Alembert principle of virtual displacements effective actions spherically-symmetric charged dust shell General Relativity
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2010/12/20
A simple and direct derivation of the variational principle and effective actions for a spherical charged dust shell in general relativity is offered. This principle is based on the relativistic versi...
Spherically Symmetric Approximation (and beyond) in Relativistic Schroedinger Theory
Spherically Symmetric Approximation Relativistic Schroedinger Theory
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2010/12/23
The energy eigenvalue problem of non-relativistic positronium is considered within the framework of Relativistic Schroedinger Theory (RST), and the results are compared to those of the conventional qu...
Existence of Spherically Symmetric Initial Data with Zero Energy, Unit Mass, and Virial less than - 1/2 for the Relativistic Vlasov-Poisson Equation with Attractive Coupling
Zero Energy Unit Mass
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2010/11/19
In a recent paper, Kiessling and Tahvildar-Zadeh proved that any spherically symmetric classical solution of the attractive relativistic Vlasov-Poisson equation launched by sufficiently regular initi...
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...
Boundary stress tensors for spherically symmetric conformal Rindler observers
surface energy conformal Rindler geometry horizon en-tropy equipartition law
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2010/3/22
The boundary energy - momentum tensors for a static observer in the conformally flat Rindler geometry are considered. We found the surface energy is positive far form the Planck world but the transver...
Static Spherically Symmetric Solution of (R +- {\mu}^4/R) Gravity
Static Spherically Symmetric Solution f(R) Gravity Modified Gravity
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2010/3/18
The static spherically symmetric solution for (R +- {\mu}^4/R) model of f(R)gravity is investigated. We obtain the metric for space-time in the solar system that reduces to the Schwarzschild metric, w...
Bifurcation of robust heteroclinic cycles in spherically invariant systems with $\ell =3,4$ mode interaction
robust heteroclinic cycles spherically invariant
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2010/4/7
Bifurcation with spherical symmetry and mode interaction is known to produce robust heteroclinic cycles between axisymmetric steady-states. The case of mode interaction with representations of $\SO3$ ...
Oscillations of a Thermoviscoelastic,Selfgravitating,Spherically Symmetric and Rotating Earth Model
Selfgravitating Oscillations Rotating Earth
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2009/6/18
Oscillations of a Thermoviscoelastic,Selfgravitating,Spherically Symmetric and Rotating Earth Model.