Generic static and spherically symmetric background
No stable static spherically symmetric wormholes in Horndeski theory
... 2 Department of Particle Physics and Cosmology, Physics Faculty, M. V. Lomonosov Moscow State University, Vorobyovy Gory, 1-2, Moscow 119991, Russia Abstract. We consider the most general theory of a single scalar field ...
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Static spherically symmetric space-time and nonlinear spinor field
... e-mail: [email protected], http://spinor.bijansaha.ru Received 20 August 2020. Published 31 August 2020. Abstract. We studied nonlinear spinor fields in the framework of a static sp- herically symmetric ...
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WEAK SECOND BIANCHI IDENTITY FOR STATIC, SPHERICALLY SYMMETRIC SPACETIMES WITH TIMELIKE SINGULARITIES
... electrostatic spherically symmetric spacetime for an ad- missible reduced Hamiltonian 6 , and that the bare mass of the central singularity is ...model static spacetimes of a charged point ...
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Gravitation on a Spherically Symmetric Metric Manifold
... a spherically symmetric surface Σ in E 3 with centre of symmetry at some arbitrary point O ∈E 3 , there cor- responds a spherically symmetric geodesic surface Σ 0 in M 3 with centre of ...
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On the Fluid Model of the Spherically Symmetric Gravitational Field
... appear natively in the hyperbolic model. Therefore the model may support a view on applicability of the static de Sitter met- ric for cosmology. In presented approach the de Sitter Uni- verse is also empty in the ...
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Eigenvalue Inequalities for a Family of Spherically Symmetric Riemannian Manifolds
... basic background material and tools that are used in the proofs of the various cases for the Payne-P´olya-Weinberger conjecture and for the Szeg¨o-Weinberger ...
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On gauge conditions for a selfgravitating spherically symmetric charged scalar field
... the spherically symmetric ...For static configuration, one can extract a subsystem of three equations for the characteristic function, the electromagnetic potential, and the modulus of a scalar ...
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Some general properties of the renormalized stress-energy tensor for static quantum states on (n+1)-dimensional spherically symmetric black holes
... our static, black hole metric, and our gen- eralized Kruskal-like co-ordinates (following [10]) which are regular across any ...this background metric in section ...
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Some Aspects of the Spherically Symmetric Higher Dimensional Cosmological Model in Lyra Manifold
... a static model of the Universe, because without the cosmological term his field equations admit only non-static cosmological models for non-zero energy ...
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Topological defect solutions in the spherically symmetric space-time admitting conformal motion
... find static and spherically symmetric distri- butions of matter which may be fitted to the exterior Schwarzschild metric [ 20 ...study spherically symmetric space-times since, other ...
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Conformal Killing Vectors in Spherically Symmetric, Inhomogeneous, Shear-free, Separable Metric Spacetimes
... The Killing vectors K I , K II and K III are always spacelike, K IV is always timelike and K V can be spacelike, null or timelike. Any spherically symmetric spacetime admits K I - K III as spacelike Killing ...
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Sensitivity kernels for time-distance helioseismology: Efficient computation for spherically symmetric solar models
... Key words. Sun: helioseismology – Sun: oscillations – Sun: interior – methods: numerical 1. Introduction The aim of time-distance helioseismology ( Duvall et al. 1993 ) is to infer the subsurface structure of the Sun by ...
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A Non Static Cylindrically Symmetric Cosmological Model in Presence of Electromagnetic Field
... Then and given by Eqns. (68) and (69) are associated tensors. The - tensor thus defined contain only the first order partial derivatives of the metric potential . Since - tensors are defined against the background ...
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On the “Size” of Einstein’s Spherically Symmetric Universe
... 1 Historical basis Non-static homogeneous models were first investigated theo- retically by Friedmann in 1922. The concept of the Big Bang began with Lemaˆıtre, in 1927, who subsequently asserted that the ...
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The Singularity Problem in Gravitational Theory. The Spherically Symmetric Case
... In the eighth chapter we extend our discussion to the most general theory, nding some sucient (though not necessary) conditions for nding regular solution with the Horndeski framework. I[r] ...
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Spherically Symmetric Inhomogeneous Macro Model Filled With Perfect Fluid
... Abstract In this paper, we have studied spherically inhomogeneous cosmological model with perfect fluid in Einstein relativity. It is observed that, cosmic time (t) has no contribution towards the study of various ...
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Admissibility and minimaxity of generalized Bayes estimators for spherically symmetric family
... Received 6 February 2006 Available online 12 January 2007 Abstract We give a sufficient condition for admissibility of generalized Bayes estimators of the location vector of spherically symmetric ...
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Application of the Frobenius Method to the Schrodinger Equation for a Spherically Symmetric Hyperbolic Potential
... 2 Petit Séminaire de Mika, Rutana, Burundi 3 Faculty of Science and Technology, East African Leadership University, Muyinga, Burundi Abstract In this paper, an efficient technique for computing the bound state energies ...
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Generalized Bayes minimax estimators of location vectors for spherically symmetric distributions
... loss; Spherically symmetric distributions; Location parameter; Superharmonic priors ...a spherically symmetric ...density spherically symmetric about ...
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Regularity to the spherically symmetric compressible Navier–Stokes equations with density-dependent viscosity
... 14. Guo, Z., Li, H., Xin, Z.: Lagrange structure and dynamics for solutions to the spherically symmetric compressible Navier–Stokes equations. Commun. Math. Phys. 209, 371–412 (2012) 15. Huang, L., Draži´c, ...
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