Results 21 to 30 of about 1,549,906 (171)
Perfect fluid spacetimes and $k$-almost Yamabe solitons
, 2023 In this article, we presumed that a perfect fluid is the source of the gravitational field while analyzing the solutions to the Einstein field equations.
De, Krishnendu +5 more
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ON THE POST-LINEAR QUADRUPOLE-QUADRUPOLE METRIC
Revista de Matemática: Teoría y Aplicaciones, 2017 The Hartle-Thorne metric defines a reliable spacetime for most astrophysical purposes, for instance simulations of slowly rotating stars. Solving the Einstein field equations, we added terms of second order in the quadrupole moment to its post-linear ...
FRANCISCO FRUTOS ALFARO, MICHAEL SOFFEL
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European Physical Journal C: Particles and Fields, 2022 We investigate the possibility of existing a class of compact charged spheres made of a charged perfect fluid in the framework of Einstein–Gauss–Bonnet theory in five-dimensional spacetime (5D EGB).
S. K. Maurya +3 more
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Structural explanations in Minkowski spacetime: which account of models? [PDF]
, 2010 In this paper we argue that structural explanations are an effective way of explaining well known relativistic phenomena like length contraction and time dilation, and then try to understand how this can be possible by looking at the literature on ...
Felline, Laura +4 more
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Some properties of Jordan-Ehlers spacetime
International Journal of Mathematics and Mathematical Sciences, 1987 It is shown that for cylindrically symmetric Jordan-Ehlers spacetime, either the charged scalar meson field associated with meson rest mass M or the charged perfect fluid cannot be the source for generating gravitation.
G. Mohanty, U. K. Panigrahi
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Semiconformal curvature tensor and perfect fluid spacetimes in general relativity
Journal of Taibah University for Science, 2020 The semiconformal curvature tensor and its divergence have been studied for perfect fluid spacetimes. It is seen, apart from other results, that the perfect fluid spacetimes with divergence-free semiconformal curvature tensor either satisfy the vacuum ...
Musavvir Ali +2 more
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Solitonic Aspect of Relativistic Magneto-Fluid Spacetime with Some Specific Vector Fields
Mathematics, 2023 The target of the current research article is to investigate the solitonic attributes of relativistic magneto-fluid spacetime (MFST) if its metrics are Ricci–Yamabe soliton (RY-soliton) and gradient Ricci–Yamabe soliton (GRY-soliton).
Mohd Danish Siddiqi +2 more
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The orientability of spacetime [PDF]
, 2002 Contrary to established beliefs, spacetime may not be time-orientable. By considering an experimental test of time-orientability it is shown that a failure of time-orientability of a spacetime region would be indistinguishable from a particle ...
Hadley, Mark J., Mark J Hadley
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Generalized Almost Schouten Solitons in LP-Sasakian Geometry and Relativistic Spacetimes
AppliedMathThe objective of this work is to characterize certain geometric aspects of LP-Sasakian (LPS) manifolds admitting a generalized almost Schouten soliton (GASS) and to prove that a such manifold with GASS is of constant scalar curvature.
Sunil Kumar Yadav +2 more
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Gravitational collapse in Rastall gravity
Physics Letters B, 2019 We study spherically symmetric gravitational collapse of a homogeneous perfect fluid in Rastall gravity. Considering a linear equation of state (EoS) for the fluid profiles, we examine the conditions under which the collapse scenario could end in a ...
A. H. Ziaie, H. Moradpour, S. Ghaffari
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