Results 11 to 20 of about 1,585,030 (297)

Conformal Einstein Perfect Fluid Spacetimes [PDF]

Journal of Physics: Conference Series, 2011
A review is given of results obtained in connection with perfect fluid spacetimes which are conformally related to Einstein spaces.
Norbert Van den Bergh, Van den Bergh, Norbert   +1 more
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Gradient Ricci Bourguignon solitons on perfect fluid space-times [PDF]

Journal of Mahani Mathematical Research
The main purpose of the present paper is about characterizing the properties of the perfect fluid space-time that admits the gradient Ricci-Bourguignon soliton. This gives some results about the stability of the energy-momentum tensor and also under some
Sakineh Hajiaghasi, Shahroud Azami
doaj   +3 more sources

Perfect and Imperfect Duty: Unpacking Kant's Complex Distinction [PDF]

, 2023
I attempt first to disentangle three aspects of Kant’s distinction between perfect and imperfect duty. There is the central distinction between principles of duty contrary to that which is contradictory in conception/consistent in conception but ...
Hope, Simon James
core   +1 more source

Thermodynamical analysis of charged rotating black hole surrounded by perfect fluid dark matter

Nuclear Physics B, 2023
This paper is devoted to studying thermodynamics and particle acceleration around charged rotating BHs surrounded by perfect fluid dark matter. In the beginning, we discuss BH horizons, ergosphere and inner stable circular orbits in the framework of ...
Gulzoda Rakhimova, Farruh Atamurotov, Faisal Javed, Ahmadjon Abdujabbarov, G. Mustafa   +4 more
doaj   +1 more source

Solution Generating with Perfect Fluids [PDF]

General Relativity and Gravitation, 1997
We apply a technique, due to Stephani, for generating solutions of the Einstein-perfect fluid equations. This technique is similar to the vacuum solution generating techniques of Ehlers, Harrison, Geroch and others. We start with a ``seed'' solution of the Einstein-perfect fluid equations with a Killing vector.
Garfinkle, David, Glass, E. N., Kirsch, J. P.   +2 more
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The quantum mechanics of perfect fluids [PDF]

Journal of High Energy Physics, 2011
35 ...
Endlich Solomon, Nicolis Alberto, Rattazzi Riccardo, Wang Junpu   +3 more
openaire   +5 more sources

Role of impinging jets in the biomechanical correction of the intraocular pressure ( IOP ) measurement [PDF]

, 2018
Glaucoma is one of the ocular diseases which develops when the eye internal fluid cannot drain properly and intraocular pressure builds up. This can result in damage to the optic nerve and the nerve fibers from the retina and early diagnosis is very ...
Theofilis, Vassilios, Elsheikh, Ahmed, Maklad, Osama   +2 more
core   +6 more sources

Perfect fluid spacetimes with two symmetries [PDF]

Classical and Quantum Gravity, 2004
A method of solving perfect fluid Einstein equations with two commuting spacelike Killing vectors is presented. Given a spacelike 2-dimensional surface in the 3-dimensional nonphysical Minkowski space the field equations reduce to a single nonlinear differential equation. An example is discussed.
Szereszewski, A., Tafel, J.
openaire   +3 more sources

Cosmological constant as Hyper Geometric function in fivedimensional space-time

Journal of Applied Science and Engineering, 2023
In this paper, we have studied the Einstein Field equation in Kaluza-Klein space-time in five dimension with the metric dS^2 = dt^2 − A^2(dx^2 + dy^2 + dz^2)− B^2dψ^2 under the assumption that B = αt, where α = Constant and scale factor satisfying the ...
Satish T. Rathod, Kalpana Pawar
doaj   +1 more source

Kerr–Newman-AdS black hole surrounded by perfect fluid matter in Rastall gravity

European Physical Journal C: Particles and Fields, 2018
The Rastall gravity is the modified Einstein general relativity, in which the energy-momentum conservation law is generalized to $$T^{\mu \nu }_{~~;\mu }=\lambda R^{,\nu }$$ T;μμν=λR,ν .
Zhaoyi Xu, Xian Hou, Xiaobo Gong, Jiancheng Wang   +3 more
doaj   +1 more source