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相关论文: Wormhole solutions in symmetric teleparallel gravi…

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In this thesis, we investigate traversable wormhole spacetimes within the context of a covariant generalization of Einstein's General Relativity, namely the energy-momentum squared gravity, denoted as $f\left(R,T_{ab}T^{ab}\right)$. Here,…

广义相对论与量子宇宙学 · 物理学 2024-12-13 Nailya Ganiyeva

In this paper, we have systematically discussed the existence of the spherically symmetric wormhole solutions in the framework of $f(Q,\,T)$ gravity under two interesting non-commutative geometries such as Gaussian and Lorentzian…

广义相对论与量子宇宙学 · 物理学 2023-07-25 Moreshwar Tayde , Zinnat Hassan , P. K. Sahoo

In this work, we construct traversable wormhole geometries in the context of f(R) modified theories of gravity. We impose that the matter threading the wormhole satisfies the energy conditions, so that it is the effective stress-energy…

广义相对论与量子宇宙学 · 物理学 2009-11-12 Francisco S. N. Lobo , Miguel A. Oliveira

In this work, we introduce a novel set of asymptotically flat wormhole solutions within the framework of $f(R,T)$ theory of gravity. Considering a linear $f(R,T)=R+ 2\lambda T$ form, we show that a wide variety of wormhole solutions with…

广义相对论与量子宇宙学 · 物理学 2024-08-09 Sara Rastgoo , Foad Parsaei

In this study, we investigate traversable wormhole solutions within the setup of $f(R,\mathcal{L}_{m})$ gravity, a modified theory of gravity where the gravitational action relies upon the matter Lagrangian $\mathcal{L}_{m}$ and the Ricci…

广义相对论与量子宇宙学 · 物理学 2025-09-10 A. S. Agrawal , Sankarsan Tarai , B. Mishra , S. K. Tripathy

In this work we analyze traversable wormhole solutions in the linear form of $f\left(R,T\right)=R+\lambda T$ gravity satisfying the Null, Weak, Strong, and Dominant Energy Conditions (NEC, WEC, SEC, and DEC respectively) for the entire…

广义相对论与量子宇宙学 · 物理学 2022-12-23 João Luís Rosa , Paul Martin Kull

In this study, we have conducted an analysis of traversable wormhole solutions within the framework of linear $f(Q, T) = \alpha Q + \beta T$ gravity, ensuring that all the energy conditions hold for the entire spacetime. The solutions…

广义相对论与量子宇宙学 · 物理学 2023-06-13 Moreshwar Tayde , Sayantan Ghosh , P. K. Sahoo

We investigate wormhole solutions using the modified gravity model $f(Q,T)$ with viscosity and aim to find a solution for the existence of wormholes mathematically without violating the energy conditions. We show that there is no need to…

广义相对论与量子宇宙学 · 物理学 2024-10-08 S. Davood Sadatian , S. Mohamad Reza Hosseini

In this paper we search for dynamical traversable wormhole solution in the modified $f(T)$ theory of gravity, $T$ being the torsion scalar. For such wormhole, the time dependence is inserted in the static traversable wormhole metric of…

综合物理 · 物理学 2019-03-27 R. C. Tefo , P. H. Logbo , M. J. S. Houndjo , J. Tossa

In this paper, we study static spherically symmetric wormhole solutions in extended teleparallel gravity with the inclusion of noncommutative geometry under Lorentzian distribution. We obtain expressions of matter components for…

广义相对论与量子宇宙学 · 物理学 2015-04-08 Abdul Jawad , Shamaila Rani

We study wormhole solutions in the framework of f (R,T) gravity where R is the scalar curvature, and T is the trace of the stress-energy tensor of the matter. We have obtained the shape function of the wormhole by specifying an equation of…

广义相对论与量子宇宙学 · 物理学 2014-01-30 Tahereh Azizi

This paper examines wormhole geometries in the context of $f(Q,T)$ gravity under the background of non-commutative distributions. We discuss the analytical solutions assuming spherical symmetry and the presence of conformal Killing vectors,…

广义相对论与量子宇宙学 · 物理学 2024-03-22 Moreshwar Tayde , Zinnat Hassan , P. K. Sahoo

Wormholes are non-trivial topological structures that arise as exact solutions to Einstein's field equations, theoretically connecting distinct regions of spacetime via a throat-like geometry. While static traversable wormholes necessarily…

广义相对论与量子宇宙学 · 物理学 2025-07-22 Mahdi Kord Zangeneh , Francisco S. N. Lobo

Casimir energy is always suggested as a possible source to create a traversable wormhole. It is also used to demonstrate the existence of negative energy, which can be created in a lab. To generalize, this idea, Yukawa modification of…

综合物理 · 物理学 2023-03-09 Ambuj Kumar Mishra , Shweta , Umesh Kumar Sharma

Scalar-tensor $f(R)$ theory of gravity is considered in the framework of a simple inhomogeneous space-time model. In this we use the reconstruction technique to look for possible evolving wormhole solutions within viable $f(R)$ gravity…

广义相对论与量子宇宙学 · 物理学 2017-08-14 Subhra Bhattacharya , S. Chakraborty

This article explores wormhole solutions within the framework of Finsler geometry and the modified gravity theory. Modifications in gravitational theories, such as $f(\mathcal{R}, \mathcal{T})$ gravity, propose alternatives that potentially…

广义相对论与量子宇宙学 · 物理学 2024-07-11 Yashwanth B. R. , Narasimhamurthy S. K. , Z. Nekouee

Traversable wormhole solutions in General Relativity require exotic matter sources that violate the null energy condition (NEC), and such behavior maybe avoided in modified gravity. In this study, we analyze the energy conditions for…

广义相对论与量子宇宙学 · 物理学 2023-01-25 Anshuman Baruah , Parangam Goswami , Atri Deshamukhya

In this paper, we derive some new exact solutions of static wormholes in f(T) gravity. We discuss independent cases of the pressure components including isotropic and anisotropic pressure. Lastly we consider radial pressure satisfying a…

广义相对论与量子宇宙学 · 物理学 2013-01-22 Mubasher Jamil , Davood Momeni , Ratbay Myrzakulov

This paper discusses several new exact solutions of static wormholes in $f(R)$ gravity with a noncommutative-geometry background, which replaces point-like structures by smeared objects. In the first part of the paper we assume the…

广义相对论与量子宇宙学 · 物理学 2014-10-21 Mubasher Jamil , Farook Rahaman , Ratbay Myrzakulov , P. K. F. Kuhfittig , Nasr Ahmed , Umar F Mondal

The paper deals with the static spherically symmetric wormhole solutions in $f(R)$-modified gravity theory with anisotropic matter field and for some particular choices for the shape functions. The present work may be considered as an…

广义相对论与量子宇宙学 · 物理学 2021-08-11 Bikram Ghosh , Saugata Mitra , Subenoy Chakraborty