Zobrazeno 1 - 10
of 371
pro vyhledávání: '"Farook Rahaman"'
Autor:
Ksh. Newton Singh, Bidisha Samanta, S. K. Maurya, Farook Rahaman, N. Kamal Singh, Anil K. Aria
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 84, Iss 11, Pp 1-10 (2024)
Abstract A shear-free, collapsing compact object, described by an embedding class I solution and emitting radiation, is presented here. Because of the properties of embedding class I, this four-dimensional interior spacetime can be embedded in pseudo
Externí odkaz:
https://doaj.org/article/65891458a12b43e8b93961e4a44260b7
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 84, Iss 8, Pp 1-12 (2024)
Abstract We study wormhole as the solution of the Wheeler–DeWitt (WdW) equation satisfying Hawking–Page wormhole boundary conditions in Friedmann–Robertson–Walker (FRW) cosmology. The quantum wormholes are formulated with arbitrary factor ord
Externí odkaz:
https://doaj.org/article/a6ba4247267b4254a0c4eaf68a9625d3
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 84, Iss 5, Pp 1-14 (2024)
Abstract In this paper, we obtain analytical solutions of Einstein field equations for a spherically symmetric anisotropic matter distributions. For this purpose physically meaningful metric potential corresponds to $$g_{rr}$$ g rr and a particular c
Externí odkaz:
https://doaj.org/article/3255aacefa9141b2a38cd397f7a3a29d
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 84, Iss 5, Pp 1-11 (2024)
Abstract We analyse traversable wormholes defined by the dynamic line elements that asymptotically approach Friedmann–Robertson–Walker (FRW) universe. These dynamical wormholes is supported by the galactic dark matter as well as perfect isotropic
Externí odkaz:
https://doaj.org/article/07a6b60e7d2e498cb8a1c04c5654b7e1
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 84, Iss 5, Pp 1-10 (2024)
Abstract In this article, we apply the Finsler spacetime to develop the Einstein field equations in the extension of modified geometry. Following Finsler geometry, which is focused on the tangent bundle with a scalar function, a scalar equation shoul
Externí odkaz:
https://doaj.org/article/dd399704ac60432e963487fde926ec92
Publikováno v:
Nuclear Physics B, Vol 1005, Iss , Pp 116598- (2024)
Spacetime singularity is not observed directly as it is covered by event horizon. Naked singularities may be formed due to gravitational collapse without an event horizon. Therefore, cosmic censorship conjecture entails advanced ascertainment. Recent
Externí odkaz:
https://doaj.org/article/d7d7248ed9d941c0adc6dd0a44dd389f
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 84, Iss 1, Pp 1-18 (2024)
Abstract A new class of exact solutions depicting anisotropic compact objects is presented in the current work. This spherically symmetric matter distribution assumes a specific form of anisotropy to obtain the exact solution for the field equations.
Externí odkaz:
https://doaj.org/article/049b2efd7b8a4aef8bf06af43802dddf
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 83, Iss 11, Pp 1-14 (2023)
Abstract In this article, we present a new model for anisotropic compact stars confined to physical dark matter (DM) based on the Bose–Einstein DM density profile and a bag model type equation of state (EoS). The obtained solutions are physically w
Externí odkaz:
https://doaj.org/article/ac0b674ba68d4808824706228c8086a7
Publikováno v:
Universe, Vol 10, Iss 8, p 331 (2024)
In this article, we estimate the gravitational deflection angles of light in the spacetime of Einstein–Cartan wormholes supported by normal matter or phantom energy utilizing the Gauss–Bonnet theorem. The obtained deflection angles are examined i
Externí odkaz:
https://doaj.org/article/04e83bf1b663420383d92486a15841d1
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 83, Iss 5, Pp 1-11 (2023)
Abstract We present a new traversable wormhole explication of Einstein’s field equations supported by the profile of Einasto Dark Matter densities (Einasto in Trudy Inst Astrofiz Alma-Ata 51:87, 1965; PTarO 36:414, 1968; Astron Nachr 291:97, 1969)
Externí odkaz:
https://doaj.org/article/0d515bdbde254d10a9835c3e7d7da550